The probability distribution of the random variable Y = X^2 + 1, where X is a binomial random variable with parameters n = 4 and p, can be calculated by finding the probabilities for each possible value of Y.
By using the formula P(Y = y) = P(X^2 + 1 = y) = P(X = √(y - 1)), we can compute the probabilities for Y taking values of 1, 2, 5, 10, and 17.
To find the probability distribution of the random variable Y = X^2 + 1, we need to compute the probability for each possible value of Y.
Given that X follows a binomial distribution with parameters n = 4 and p, where x can take values from 0 to 4, we can calculate the corresponding probabilities for Y.
We can compute the probabilities using the formula:
P(Y = y) = P(X^2 + 1 = y) = P(X = √(y - 1)).
Using this formula, we can calculate the probabilities for each value of Y:
P(Y = 1) = P(X = √(1 - 1)) = P(X = 0) = (4 choose 0) * p^0 * (1 - p)^(4 - 0).
P(Y = 2) = P(X = √(2 - 1)) = P(X = 1) = (4 choose 1) * p^1 * (1 - p)^(4 - 1).
P(Y = 5) = P(X = √(5 - 1)) = P(X = 2) = (4 choose 2) * p^2 * (1 - p)^(4 - 2).
P(Y = 10) = P(X = √(10 - 1)) = P(X = 3) = (4 choose 3) * p^3 * (1 - p)^(4 - 3).
P(Y = 17) = P(X = √(17 - 1)) = P(X = 4) = (4 choose 4) * p^4 * (1 - p)^(4 - 4).
These probabilities will form the probability distribution of the random variable Y.
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HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
Given:
Grocery store located at point (5,-4).
Park is located at point (-5,4).
Paula's house is halfway between the Grocery store and park.
School is halfway between the Paula's house and park.
To find:
Ordered pair for the school.
Solution:
Formula used:
\(\text{Midpoint}=\left(\dfrac{x_1+x_2}{2},\dfrac{y_1+y_2}{2}\right)\)
Paula's house is halfway between the Grocery store and park. It means the location of Paula's house is the midpoint of (5,-4) and (-5,4).
\(\text{Paula's house}=\left(\dfrac{5+(-5)}{2},\dfrac{(-4)+4}{2}\right)\)
\(\text{Paula's house}=\left(\dfrac{0}{2},\dfrac{0}{2}\right)\)
\(\text{Paula's house}=\left(0,0\right)\)
So, the Paula's house is located at (0,0).
School is halfway between the Paula's house and park. It means the location of the school is the midpoint of (0,0) and (-5,4).
\(\text{School}=\left(\dfrac{0+(-5)}{2},\dfrac{0+4}{2}\right)\)
\(\text{School}=\left(\dfrac{-5}{2},\dfrac{4}{2}\right)\)
\(\text{School}=\left(-2.5,2\right)\)
Therefore, the correct option is B.
16. 220 fans travel to a rugby match in minibuses.
Each minibus holds 18 fans.
How many minibuses are needed?
Answer:
13 buses are required.
Step-by-step explanation:
To find the number of minibuses required, take the total number of fans and divide by the number of fans each bus holds.
220 /18
12 2/9
We need to round up to make sure all the fans get on a bus.
13 buses are required.
URGENT MUST BE ANSWERED NOW !! PLEASE AND THANK YOU (image included)
Mitch uses 1/4 of his supply of apples to make apple crisp and 3/8 of his supply of apples to make pies. If Mitch uses 10 pounds of apples, how many pounds of apples are in his supply?
Answer:
16 lbs
Step-by-step explanation:
total of apples = 1/4 + 3/8 = 2/8 + 3/8 = 5/8
then 10 x 8/5 = 16
Find the equation of the circle that has a diameter with endpoints located at (-3, 6) and (9, 6).
Answer: \((x+3)^2+(y-6)^2 = 36\\\\\)
==========================================================
Explanation:
If you apply the midpoint formula to the given points, you should find the midpoint is (3,6). This point represents the center of the circle. This means (h,k) = (3,6).
The radius is r = 6 because this is the distance from the center to either given endpoint. Either count out the spaces or use subtraction of the x coordinates. This works because the y coordinates are all the same.
Use those h, k and r values to plug them into the equation below
\((x-h)^2+(y-k)^2 = r^2\\\\(x-(-3))^2+(y-6)^2 = 6^2\\\\(x+3)^2+(y-6)^2 = 36\\\\\)
which represents the equation of the circle we're after.
The graph is below.
Judy charged $800 worth of furniture using noninstallment credit since her tax refund is due shortly. If she intends to pay off the entire amount of her purchase, how much will she have to come up with if her refund is $535?
If Judy's refund is $535, to pay for furniture worth $800, she will have to come up with $265, which is the difference.
What is the difference?The difference is the result of the subtraction operation.
The subtraction operation is one of the four basic mathematical operations.
Subtraction operations involve the minuend, subtrahend, the subtraction operator (-), the difference, and the equal symbol (=).
The cost of furniture = $800
Expected credit refund = $535
The difference between the cost and refund = $265 ($800 - $535)
Thus, Judy will bring $265 to make up for the purchase of the furniture.
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Which inequality has no solution? 6 (x 2) greater-than x minus 3 3 4 x less-than-or-equal-to 2 (1 2x) negative 2 (x 6) less-than x minus 20 x minus 9 less-than 3 (x minus 3)
From the provided equations, the equation which has no solution is 3 4 x less-than-or-equal-to 2 +4x. Option 2 is correct.
What is the inequality equation?Inequality equation is the equation in which the two expressions are compared with greater than, less than or other inequality signs.
From the given equations, the equation which has no solution has to be found out. When the value, does not equate for the expression, then the expression has no solution.
The first equation given in the problem is,
\(6 (x +2) > x-3\)
Solve it further,
\(6 x +12 > x-3\\6x-x > -3-12\\5x > -15\\x > -3\)
The second equation given in the problem is,
\(3+ 4x \leq 2 (1 +2x)\)
Solve it further,
\(3+ 4x \leq 2 +4x\\4x- 4x \leq 2-3\\0\leq-1\)
The value of 0 is greater than the number -1. Thus, this inequality has no solution.
The option 3 and 4 has a solution. Hence, from the provided equations, the equation which has no solution is 3 4 x less-than-or-equal-to 2 +4x. Option 2 is correct.
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HELP ME OUT!!!!
Billy watches 7 seasons of a TV show. Each season includes 22 episodes
and each episode is 50 minutes long. How many minutes did Billy watch TV?
Select one:
O a.154 minutes
O b.350 minutes
O c. 7, 700 minutes
O d. 2750 minutes
I think it's C I'm pretty sure u have to multiply
Billy watches tv for 7,700 minutes. Hence option c is correct.
Billy watches 7 seasons of a TV show. Each season includes 22 episodes
and each episode is 50 minutes long.
using mathematics operators it deals with numbers of operations according to the statements.
Here,
Total number of minutes bill watches tv = 7*22*50
= 7,700 minutes
Thus, Billy watches tv for 7,700 minutes.
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Name the intersection of lines n and m.
intersection of lines n and m is D
Part 1 John sells pushchairs on eBay. He buys the pushchair from China at a wholesale price of £350 and resells them for £450. He also needs to store them before they are buying dispatched so he rented a garage space for £800 a month. A. What is the equation to calculate the profit? b. How many pushchairs does John need to sell to break even? c. If John were to sell 23 pushchairs, what would be his profit/loss?
The equation to calculate the profit is P(x) = 100x - 800
To break even, he should set 8 chairsIf John were to sell 23 pushchairs, his profit would be £1500What is the equation to calculate the profit?Given that
Cost price = 350
Selling price = 450
Garage cost = 800 per month
Represent the number of chairs with x
So, we have
C(x) = 350x + 800
S(x) = 450x
So, the profit function is
P(x) = 450x - 350x - 800
P(x) = 100x - 800
For the number of pushchairs to break even, we set the profit to 0
So, we have
100x - 800 = 0
Evaluate
x = 8
If John were to sell 23 pushchairs, his profit/loss would be
P(23) = 100 * 23 - 800
P(23) = 1500
Hence, his profit would be £1500
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Show that there exist a rational number a and an irrational number b such that a^b is irrational.
Answer:
In explanation below.
Step-by-step explanation:
Presumably, the proof you have in mind is to use a=b=2–√a=b=2 if 2–√2√22 is rational, and otherwise use a=2–√2√a=22 and b=2–√b=2. The non-constructivity here is that, unless you know some deeper number theory than just irrationality of 2–√2, you won't know which of the two cases in the proof actually occurs, so you won't be able to give aa explicitly, say by writing a decimal approximation.
Find f(5) for f(x)= 2(2).
A. 8
B. 4
C. 32
D. 2
Consider this equation. |y + 6| = 2 what can be concluded of the equation? check all that apply.
The conclusion from the equation |y + 6| = 2 is that it has two solutions , the correct option is (b) .
In the question ,
it is given that ,
the equation is given as |y \(+\) 6| \(=\) 2 ,
after removing the modulus , we get the two equations , that are
y + 6 = 2 and y + 6 = -2
Solving y + 6 = 2 , we get
y + 6 = 2
Subtracting 6 from both LHS and RHS ,
we get
y = 2 - 6
y = -4
On Solving y + 6 = -2 ,
we get
y + 6 = -2,
Subtracting 6 from both LHS and RHS ,
we get
y = - 2 - 6
y = -8 .
the two solutions are y = -8 and y = -4 .
Therefore , The conclusion from the equation |y + 6| = 2 is that it has two solutions , the correct option is (b) .
The given question is incomplete , the complete question is
Consider this equation. |y + 6| = 2 what can be concluded of the equation? check all that apply.
(a) There will be one solution
(b) There will be two solutions.
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Connor makes 3 batches of muffins . Each batch has 12 muffins . Connor eats 2 muffins . What is m, the number of muffins Connor has left
Find the angle between the vectors. (First find an exact expression and then approximate to the nearest degree.) a = 61-3j+ k. b=7i-k exact approximate
The approximate angle between vectors a and b is 31 degrees.
To find the angle between two vectors, you can use the dot product formula:
θ = arccos((a · b) / (|a| |b|))
Let's calculate the angle between vectors a and b:
a = 6i - 3j + k
b = 7i - k
To find the dot product (a · b), we multiply the corresponding components and sum them up:
(a · b) = (6)(7) + (-3)(0) + (1)(-1) = 42 + 0 - 1 = 41
To find the magnitudes (|a| and |b|), we calculate the square root of the sum of the squares of the components:
|a| = \(\sqrt((6^2) + (-3^2) + (1^2)) = \sqrt(36 + 9 + 1) = \sqrt(46)\)
|b| = \(\sqrt((7^2) + 0 + (-1^2)) = \sqrt(49 + 0 + 1) = \sqrt(50)\)
Now we can substitute the values into the formula to find the angle:
θ = arccos(41 / (\(\sqrt(46) * \sqrt(50)\)))
Calculating the approximate value:
θ ≈ arccos(41 / (6.782329983 * 7.071067812)) ≈ arccos(41 / 47.995) ≈ arccos(0.85425) ≈ 31.11 degrees
Therefore, the approximate angle between vectors a and b is 31 degrees.
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a person ate 2000 calories in a day of those calories 35% were from fat how many calories are from fat
Answer:
700
Step-by-step explanation:
For $155.50, a cosmetician buys 7 L of moisturizer and repackages it in 250-milliliter jars. Each jar costs the cosmetician $0.50. Each jar of moisturizer is sold for $8.95. Find the profit on the 7 L of moisturizer.
Answer:
$81.10
Step-by-step explanation:
Profit = total revenue - total cost
1 liter = 1000 mm
7 liter = 7000 mm
Number of jars needed = 7000 / 250 = 28
total revenue = number of jars sold x price per jar
28 x $8.95 = 250.60
Total cost = $155.50 + (0.5 x 28) = 169.50
Profit = 250.60 - 169.50 = 81.10
how to add 1/6 and 2/3
Answer:
5/6
Step-by-step explanation:
2/3×2=4/6
1/6+4/6=5/6
Answer:
1/6 + 2/3 = 5/6
Step-by-step explanation:
When adding fractions you have to find a common denominator(which is the bottom number of a fraction). So 1/6 and 2/3 do not have a common denominator so you have to multiply 2/3 by 2/2 to get a 6 in the denominator. 2/3 x 2/2 = 4/6. The you just add the two. 4/6 + 1/6 = 5/6
Find x in this geometry question
Answer:
AB || CE, so we have triangle DEO, two of whose angles are 100° and 26° (from point D, draw DE such that CD + DE = CE intersects BO). The third angle of this triangle measures 54°, so
x = 180° - 54° = 126°.
A) Find dy for 4y - 3xy + 8x = 0 and b) evaluate dy for x = 0 and dx = 0.05
Compute the differential for both sides:
4y - 3xy + 8x = 0
→ 4 dy - 3 (y dx + x dy) + 8 dx = 0
Solve for dy :
4 dy - 3y dx - 3x dy + 8 dx = 0
(4 - 3x) dy + (8 - 3y) dx = 0
When x = 0, we have
4y - 3•0y + 8•0 = 0 → 4y = 0 → y = 0
and with dx = 0.05, we get
(4 - 3•0) dy + (8 - 3•0) • 0.05 = 0
→ 4 dy + 0.4 = 0
→ 4 dy = -0.4
→ dy = -0.1
Problem solving
the radius of the two larger sectors is
7.8 cm
the radius of the two smaller sectors in
4.2 cm
work out the total area of the shape.
The total area of both the circles as calculated from the data given is found out to be as 246.64 cm² .
The formula to calculate the area of a circle is, (pi)r² where r = radius.
Therefore, the area of the first circle is found out to be as ,
22/ 7 x 7.8 x 7.8
=191.2 cm²
and the area of second circle will be ,
22/7 x 4.2 x 4.2
= 55.44 cm²
Therefore, the sum of the areas of the circle will be ,
191.2 + 55.44
= 246.64 cm² .
The area of a shape is known as the space occupied by it in tw dimensional space.
Every figure has a specific area and can be found by using unique formulas. The formula to calculate the area of a circle is (pi)r².
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The chord joining the vertices of an ellipse is called the ______ ______, and its midpoint is the ______ of the ellipse.
The chord joining the vertices of an ellipse is called the major axis, and its midpoint is the center of the ellipse.
The major axis of an ellipse is the chord that passes through the two vertices of the ellipse. It is the longest chord and its length is equal to twice the length of the semi-major axis of the ellipse. The midpoint of the major axis is the point that divides the major axis into two equal segments, and it coincides with the center of the ellipse. The center of the ellipse is the point of intersection of the major and minor axes, and it is equidistant from all points on the ellipse.
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Solve for x. Figures are not necessarily drawn to scale.
Check the picture below.
\(\cfrac{17.5+14}{17.5}~~ = ~~\cfrac{x}{12.5}\implies \cfrac{(17.5+14)(12.5)}{17.5}~~ = ~~x\implies 22.5=x\)
the population proportion of college students that stated, if given a choice, they would prefer to start their own business rather than work for someone else is 72%. assume you collected a random sample of 100 students and 78 stated they would prefer to start their own business rather than work for someone else, what is the sample proportion? (give your answer as a decimal and round to two decimal places.)
78% of the students in the sample stated they would prefer to start their own business rather than work for someone else.
The sample proportion is a statistic that measures the proportion of individuals in a sample who have a particular characteristic of interest. In this case, we are interested in the proportion of college students who stated they would prefer to start their own business rather than work for someone else.
The sample proportion can be calculated as the number of individuals in the sample who have the characteristic of interest (in this case, preferring to start their own business) divided by the total number of individuals in the sample. Using the information provided in the question, we have:
Number of individuals in the sample who prefer to start their own business: 78
Total number of individuals in the sample: 100
So the sample proportion is:
sample proportion = 78/100 = 0.78
Rounding this to two decimal places, we get:
sample proportion ≈ 0.78
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In Emily's physics class, she had to solve the equation 9 = 12at2 + ut for u. Each step of her work is shown below.
Use the drop-down menus to explain each step.
The equation of u when it is the subject is u = 9/t - 12at
How to determine the solution for the equation for u?From the question, the original equation is given as
9 = 12at2 + ut
Next, we rewrite the equation to show the exponents
This is represented as
9 = 12at² + ut
To solve further, we simply isolate the variable term ut
This is done by subtracting 12at² from both sides of the equation
So, we have the following equation
9 - 12at² = 12at² - 12at² ut
Evaluate the like terms in the equation
So, we have
9 - 12at² = ut
Lastly, divide both sides of the equation by t
So, we have
(9 - 12at²)/t = ut/t
Evaluate the quotients
9/t - 12at = u
Make us the subject
u = 9/t - 12at
Hence, the solution for the equation for u is u = 9/t - 12at
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need helps pleaseeeeeeeeeeee
Answer:7-11
Step-by-step explanation:I am not sure but I think you just put 7 and 11 hope this helps but have a answer on the side just in case I am wrong
Factoring trinomials
Select two for each
\(\mathfrak{\huge{\pink{\underline{\underline{AnSwEr:-}}}}}\)
Actually Welcome to the Concept of the Factors.
1.) x^2-3x-10 = (x-5) (x+2)
2.)x^2-3x-18 = (x-6) (x+3)
Consider the following normal form game: L U 0,0 D 2-3 R 2, -2 1,-1 Assume that x > 0. Moreover, assume that Player Row chooses U with probability p and Player Column chooses L with probability q. a) Derive and plot players' best response functions (p on the horizontal axis and q on the vertical axis). b) Find all the Nash equilibria (pure and mixed strategies) of the above game. Illustrate your answer in a graph (p on the horizontal axis and q on the vertical axis. Comment. Consider now the following two-player simultaneous-move game, called the rock-paper-scissors-lizard game. R stands for rock, P for paper, S for scissors, and L for lizard. R beats S but loses against P and L; P beats R but loses against S and L; S beats P and L but loses against R; L beats R and P but loses against S. The payoff for winning is 1 and that for losing is -1; when both players choose the same strategy they each get 0. Assume that Player Row chooses R with probability r, P with probability p, and S with probability $ (similarly for Player Column). c) Write down the normal form representation of the game. d) Find all the Nash equilibria (pure and mixed strategies) of the game. Comment.
(a) Player Column's best response is given by:
BR_Column(p) = { L if p < 1/2, R if p > 1/2 (indifferent if p = 1/2)
(b) Where both players are indifferent between their available strategies.
(c) The normal form representation of the game is above.
(d) No player can gain an advantage by deviating from this strategy.
This equilibrium results in an expected payoff of 0 for each player.
(a) To derive the best response functions, we need to find the strategies that maximize the payoffs for each player given the mixed strategy of the other player.
Player Row's best response function:
If Player Column chooses L with probability q, Player Row's expected payoff for choosing U is 0q + 2(1-q) = 2 - 2q.
If Player Column chooses R with probability 1-q, Player Row's expected payoff for choosing U is 0*(1-q) + 1*q = q.
Therefore, Player Row's best response is given by:
BR_Row(q) = { U if q < 1/3, D if q > 1/3 (indifferent if q = 1/3)
Player Column's best response function:
If Player Row chooses U with probability p, Player Column's expected payoff for choosing L is 0p + 2(1-p) = 2 - 2p.
If Player Row chooses D with probability 1-p, Player Column's expected payoff for choosing L is 0*(1-p) + (-1)*p = -p.
Therefore, Player Column's best response is given by:
BR_Column(p) = { L if p < 1/2, R if p > 1/2 (indifferent if p = 1/2)
Plotting the best response functions on a graph with p on the horizontal axis and q on the vertical axis will result in two line segments: BR_Row(q) is horizontal at U for q < 1/3 and horizontal at D for q > 1/3, while BR_Column(p) is vertical at L for p < 1/2 and vertical at R for p > 1/2.
The two segments intersect at the point (p, q) = (1/2, 1/3).
(b) To find the Nash equilibria, we look for the points where the best response functions intersect. In this case, the only Nash equilibrium is at (p, q) = (1/2, 1/3), where both players are indifferent between their available strategies.
Now let's move on to the rock-paper-scissors-lizard game:
(c) The normal form representation of the game can be written as follows:
R P S L
------------------------
R | 0,0 -1,1 1,-1 1,-1
P | 1,-1 0,0 -1,1 1,-1
S | -1,1 1,-1 0,0 -1,1
L | -1,1 -1,1 1,-1 0,0
(d) To find the Nash equilibria, we look for any strategy profiles where no player can unilaterally deviate to improve their payoff.
In this game, there are no pure strategy Nash equilibria since each strategy can be countered by another strategy with a higher payoff.
However, there is a mixed strategy Nash equilibrium where each player chooses their actions with equal probabilities: r = p = s = l = 1/4.
In this case, no player can gain an advantage by deviating from this strategy.
This equilibrium results in an expected payoff of 0 for each player.
In summary, the rock-paper-scissors-lizard game has a unique mixed strategy Nash equilibrium where each player randomly chooses their actions with equal probabilities.
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What is f(2) for the function f(x) = 2 x^2 + 6 x − 5
Answer:
Step-by-step explanation:
x + 2) = 2(x + 2)2 - 6(x + 2)
= 2(x2 + 4x + 4) - 6(x + 2)
= 2x2 + 8x + 8 - 6x - 12
= 2x2 + 2x - 4
Select ALL the correct answers. Which of the following statements are true about the equation below? x 2 − 6 x + 2 = 0 The graph of the quadratic equation has a maximum value. The extreme value is at the point (7,-3). The graph of the quadratic equation has a minimum value. The extreme value is at the point (3,-7). The solutions are x = − 3 ± 7 . The solutions are x = 3 ± 7 .
The correct statement for the given quadratic equation x² - 6x + 2 = 0 is the graph of the quadratic equation has a minimum value. Hence, correct option is C.
The graph of the quadratic equation has a maximum or minimum value depending on the sign of the leading coefficient. In this case, the leading coefficient is positive, which means the graph of the quadratic equation opens upwards and has a minimum value.
The extreme value is not at the point (7,-3) or (3,-7) because those points are not on the graph of the equation.
The solutions of the equation can be found using the quadratic formula
x = [-(-6) ± √((-6)² - 4(1)(2))] / (2(1))
x = [6 ± √(28)] / 2
x = [6 ± 2√7] / 2
x = 3 ± √7
Therefore, the correct statement is C.
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For the expression 6 − y + 3, determine the coefficient for the variable term.
−1
0
3
6
Answer:
0
Step-by-step explanation:
Answer:
-1
Step-by-step explanation:
The y is the variable.
There’s a imaginary -1 in front of the y