keith tabulated the values for the average speeds on each day of his road trip as 61.5, 62.2, 55.7, 50.6, 71.3, 70.8, and 66.8 mph. he wishes to construct a 90% confidence interval. what value of t* should keith use to construct the confidence interval? answer choices are rounded to the thousandths place. 1.415 1.943 1.440 1.895

Answer:

56a+40b

Step-by-step explanation:

43a plus 13a is 56a, -12b + 52b is 40b, together it's 56a+40b

Answer:

Answer on a graph

The answer is c. Statistic because the value is a numerical measurement describing a characteristic of a sample.

A statistic is a value that summarizes a characteristic of a sample. In this case, the percentage of employees in the sample who own a television (45%) is a statistic because it summarizes a characteristic of the sample of employees that was selected. A parameter, on the other hand, is a value that summarizes a characteristic of a population. For example, if we were to consider the percentage of all employees in the company who own a television, then the mean or median percentage of television ownership would be a parameter because it would describe a characteristic of the entire population of employees. In summary, statistics are values that describe a characteristic of a sample, while parameters are values that describe a characteristic of a population.

To learn more about Statistic click here

brainly.com/question/14318705

#SPJ4

Answer:

x = 3

Step-by-step explanation:

If T is the midpoint, that means segments ST and TU are congruent.

Step 1: Set up expression

8x + 11 = 12x - 1

Step 2: Solve

11 = 4x - 1

12 = 4x

x = 3

In an incidence geometry with the additional axiom that every line has exactly three points lying on it, the minimum number of points required is 4.

This is because a line must have at least two-points to exist, and if it has only two points, it is not possible to have another point lying on it (since every line must have exactly three points).

Hence, there must be at least 4-points to create two lines such that each line contains exactly three points.

Also, with 4 points, it is possible to create 6 lines such that each line contains exactly 3 points, forming a configuration known as the Fano-plane, which is the smallest example of an incidence geometry that satisfies the given axiom.

Learn more about geometry:

https://brainly.com/question/28359671

#SPJ4

The UCR (Uniform Crime Reporting) is B. not a truly reliable measure.

The UCR is a program established by the FBI in 1930 to collect and analyze crime statistics from law enforcement agencies across the United States. Although it provides useful data and insights into crime trends, it is not without its limitations. One significant issue with the UCR is that it relies on voluntary reporting from law enforcement agencies, meaning that some areas may not provide complete or accurate data. This can lead to an underrepresentation of certain crimes or inconsistencies in reporting across jurisdictions.

Another limitation is that the UCR only includes reported crimes, excluding any unreported criminal activity. This means that the data does not necessarily provide a comprehensive picture of all crimes occurring in a given area. Additionally, the UCR uses a hierarchy rule, meaning that if multiple crimes are committed during a single incident, only the most severe crime is counted. This can result in an undercounting of less severe but still significant crimes.

In summary, although the UCR provides valuable information on crime trends and patterns, it is not a truly reliable measure due to its reliance on voluntary reporting, exclusion of unreported crimes, and hierarchy rule. Therefore, the correct option is B.

The question was incomplete, Find the full content below:

it is fair to say that the ucr is: group of answer choices

A. A mutually exclusive measure

B. Not a truly reliable measure

C. An exhaustive measure

D. All of the above

Know more about UCR (Uniform Crime Reporting) here:

https://brainly.com/question/30856039

#SPJ11

Answer:

If there is more than one X value in the ordered pairs and they have different Y values, it is not a function. Otherwise, it is a functio

Answer:

You could set up the relation as a table of ordered pairs. Then, test to see if each element in the domain is matched with exactly one element in the range. If so, you have a function!

there are 128 different bit strings of length 7. To calculate the number of bit strings of length 7, we need to consider that each position in the bit string can either be 0 or 1.

Since there are 7 positions in the string, we have 2 options (0 or 1) for each position. Therefore, the total number of bit strings of length 7 is 2^7 = 128.To calculate the number of bit strings of length 7 that start with 0110, we need to fix the first four positions as 0110. The remaining three positions can have either 0 or 1, giving us 2 options for each position. Therefore, the total number of bit strings of length 7 that start with 0110 is 2^3 = 8.

To calculate the number of bit strings of length 7 that contain the string 0000, we need to consider the possible positions for the string 0000. It can occur in five different positions: at the beginning, at the end, or in any of the three middle positions. For each position, the remaining three positions can have either 0 or 1, giving us 2 options for each position. Therefore, the total number of bit strings of length 7 that contain the string 0000 is 5 * 2^3 = 40. However, we need to subtract the cases where the string 0000 occurs in both the beginning and end positions, as they were counted twice. So, the final answer is 40 - 24 = 16.

To know more about length, visit:

https://brainly.com/question/8552546

#SPJ11

The probability of selecting ko and vz but excluding pfe and ge from a set of 8 stocks is 0.0625 or 6.25%.

To see why, we can use the formula for the probability of an event occurring, which is:

P(event) = (number of ways the event can occur) / (total number of possible outcomes)

The total number of possible outcomes when selecting 4 stocks from a set of 8 is:

C(8,4) = 8! / (4! * 4!) = 70

where C(n,r) is the number of combinations of r objects chosen from a set of n objects.

To count the number of ways to select ko and vz while excluding pfe and ge, we need to choose 2 stocks out of the remaining 4, which can be done in:

C(4,2) = 4! / (2! * 2!) = 6

ways.

Therefore, the probability of selecting ko and vz but excluding pfe and ge is:

P(ko and vz but not pfe or ge) = 6 / 70 = 0.0625 or 6.25%.

In summary, the probability of selecting ko and vz but excluding pfe and ge from a set of 8 stocks is 0.0625 or 6.25%, which can be calculated using the formula for probability and the number of possible outcomes that satisfy the given conditions.

To learn more about probability : brainly.com/question/32117953

#SPJ11

complete question:

If you selected four of these stocks at random, what is the probability that your selection included KO and VZ but excluded PFE and GE?

Answer:

No solutions (Maybe)

Step-by-step explanation:

If you input 0 into the equation you get -3=-4, which means it has no solutions.

Inequality can be used to determine x, the greatest number of 120-kilogram crates that can be loaded onto the shipping container is  8000 + 120C <= 27500

An inequality is a relationship that allows us to contrast two or more mathematical expressions.

Knowing that;

Each carton weighs 120 kg.

The container's maximum weight when loaded is 27500 kg.

Weight of the container as it is currently loaded: 8000 kg

Now that we have merged, we have;

Solution

because 8000 grams have already been loaded kilograms

into the container

each crate weighs 120 kilograms.

so 8000 + 120C <= 27500

To learn more about inequality refer to:

https://brainly.com/question/28862943

#SPJ1

Answer:

X = 0, Y= -2

Step-by-step explanation:

Compare the x and y coordinate values

3x + 2y =-4_______(1)

2x - y = 2 ________(2)

Multiply the (2) with 2

4x - 2y = 4

and add the new equation to (1)

3x + 2y =-4

4x - 2y = 4

____________

7x = 0

X = 0

Substitute x value into (1)

3 *0 + 2y = -4

0 + 2y =-4

2y =-4

Y= -2

The value of the double integral ∬R (6x/(1 + xy)) dA over the region

R = [0, 6] × [0, 1] is 6 ln(7).

To calculate the double integral ∬R (6x/(1 + xy)) dA over the region

R = [0, 6] × [0, 1], we can integrate with respect to x and y using the limits of the region.

The integral can be written as:

∬R (6x/(1 + xy)) dA = \(\int\limits^1_0\int\limits^6_0\) (6x/(1 + xy)) dx dy

Let's start by integrating with respect to x:

\(\int\limits^6_0\)(6x/(1 + xy)) dx

To evaluate this integral, we can use a substitution.

Let u = 1 + xy,

     du/dx = y.

When x = 0,

u = 1 + 0y = 1.

When x = 6,

u = 1 + 6y

  = 1 + 6

   = 7.

Using this substitution, the integral becomes:

\(\int\limits^7_1\) (6x/(1 + xy)) dx = \(\int\limits^7_1\)(6/u) du

Integrating, we have:

= 6 ln|7| - 6 ln|1|

= 6 ln(7)

Now, we can integrate with respect to y:

= \(\int\limits^1_0\) (6 ln(7)) dy

= 6 ln(7) - 0

= 6 ln(7)

Therefore, the value of the double integral ∬R (6x/(1 + xy)) dA over the region R = [0, 6] × [0, 1] is 6 ln(7).

Learn more about double integral here:

brainly.com/question/15072988

#SPJ4

The value of the double integral   \(\int\limits^1_0\int\limits^6_0 \frac{6x}{(1 + xy)} dA\), over the given region [0, 6] x [0, 1] is (343/3)ln(7).

Now, for the double integral  \(\int\limits^1_0\int\limits^6_0 \frac{6x}{(1 + xy)} dA\), use the standard method of integration.

First, find the antiderivative of the function 6x/(1 + xy) with respect to x.

By integrating with respect to x, we get:

∫(6x/(1 + xy)) dx = 3ln(1 + xy) + C₁

where C₁ is the constant of integration.

Now, we apply the definite integral over x, considering the limits of integration [0, 6]:

\(\int\limits^6_0 (3 ln (1 + xy) + C_{1} ) dx\)

To proceed further, substitute the limits of integration into the equation:

[3ln(1 + 6y) + C₁] - [3ln(1 + 0y) + C₁]

Since ln(1 + 0y) is equal to ln(1), which is 0, simplify the expression to:

3ln(1 + 6y) + C₁

Now, integrate this expression with respect to y, considering the limits of integration [0, 1]:

\(\int\limits^1_0 (3 ln (1 + 6y) + C_{1} ) dy\)

To integrate the function, we use the property of logarithms:

\(\int\limits^1_0 ( ln (1 + 6y))^3 + C_{1} ) dy\)

Applying the power rule of integration, this becomes:

[(1/3)(1 + 6y)³ln(1 + 6y) + C₂] evaluated from 0 to 1,

where C₂ is the constant of integration.

Now, we substitute the limits of integration into the equation:

(1/3)(1 + 6(1))³ln(1 + 6(1)) + C₂ - (1/3)(1 + 6(0))³ln(1 + 6(0)) - C₂

Simplifying further:

(343/3)ln(7) + C₂ - C₂

(343/3)ln(7)

So, the value of the double integral  \(\int\limits^1_0\int\limits^6_0 \frac{6x}{(1 + xy)} dA\), over the given region [0, 6] x [0, 1] is (343/3)ln(7).

To learn more about integration visit :

brainly.com/question/18125359

#SPJ4

The first blue square is located at position 97 on the board.

The pattern for painting the squares on the board is 1 blue square, 2 red squares, and 3 green squares. This pattern is repeated along the length of the board. To find the position of the first blue square, we can use the formula:

Position of first blue square = (Number of squares in pattern) × (Number of times pattern is repeated) + 1

The number of squares in the pattern is 1 + 2 + 3 = 6. The number of times the pattern is repeated is 100/6 = 16.6666, which we can round down to 16.

So the position of the first blue square is (6 × 16) + 1 = 97. Therefore, the first blue square is located at position 97 on the board.

The complete question is: On a board measuring 1×100 each square is number from 1 to 103 colors are used to paint the squares from left to right the following patterns. Repeat it one blue square to raise squares three greens where is one blue. At what position is the first blue square located?

More questions on patterns and positions can be researched here: https://brainly.com/question/331555

#SPJ11

A jar contains 6 red marbles numbered 1 to 6 and 10 blue marbles numbered 1 to 10. If a marble is randomly drawn, the probability it will be red is 3/8, it will be red or odd number is 11/16, and it will be blue and even number is 5/32.

Probability measures how likely an event occurs compared to the total possible outcomes. Mathematically, the probability of an event A is defined as:

P(A) = number of ways event A can occur / total possible outcomes

Data from the problem:

Red marble : 6 , numbered 1 - 6

Blue marble : 10 , numbered 1 - 10

Hence,

Total marble = 6 + 10 = 16

a) P(red) =  6 / 16 = 3/8

b) Possible odd numbers:

   Red marble: 1, 3, 5

   Blue marble: 1, 3, 5, 7, 9

   Hence,

    P(odd) = 8/16 = 1/2

c) P(odd or red) = P(odd) + P(red)

                          = 8/16 + 3/16 = 11/16

d) P(blue) = 10/16

   P(even) = 1 - P(odd) = 1 - 1/2 = 1/2

   Hence,

   P(blue and even) = P(blue) x P(even)

                                = 10/16 x 1/2 = 5/16

Learn more about probability here:

https://brainly.com/question/2239055

#SPJ4

Answer:

Your closest answers would be D), and E)

Step-by-step explanation:

Mark Brainliest?

The clock minutes rotate 270 degrees in 45 minutes.

While rotating, the clock's hands are seen to move at a speed of six degrees per minute.

The number of degrees for a clock minute is solved by

60 minutes  = 360 degrees

1 minute = ?

cross multiplying

60 * ? = 360

? = 360 / 60

? = 6

hence 1 minute is 6 degrees

The formula to use to get the calculation is multiplying the number of minutes by 6

Number of degrees in 45 minutes = 45 * 6

Number of degrees in 45 minutes = 270 degrees

Learn more about clock rotation:

brainly.com/question/28741125

#SPJ1

a.Using the properties of the Laplace transform, the inverse Laplace transform of X(s) is x(t) = 1 - e⁻¹⁰ᵗ, b.The inverse Laplace transform of X(s) is x(t) = (1 - 3e⁻ᵗcos(t) + 4e⁻ᵗsin(t))/5, c. Using the properties of the Laplace transform, the inverse Laplace transform of X(s) is x(t) = 4e⁻²ᵗ + (1 - cos(2πt))/(π).

a. For the equation x'(t) + 10x(t) = u(t), where x(0-) = 1:
Taking the Laplace transform of both sides, we get:
sX(s) - x(0-) + 10X(s) = 1/s,
where X(s) is the Laplace transform of x(t).
Substituting x(0-) = 1, we have:
(s + 10)X(s) = 1/s + 1.
Simplifying, we get:
X(s) = (1/s + 1)/(s + 10).
Now, we need to find the inverse Laplace transform of X(s) to get the solution x(t).
Using the properties of the Laplace transform, the inverse Laplace transform of X(s) is:
x(t) = 1 - e⁻¹⁰ᵗ.

b. For the equation x''(t) - 2x'(t) + 4x(t) = u(t), where x(0-) = 0 and [d/dt x(t)]t=0- = 4:
Taking the Laplace transform of both sides, we get:
s²X(s) - sx(0-) - [d/dt x(t)]t=0- + 2sX(s) - 2x(0-) + 4X(s) = 1/s,
where X(s) is the Laplace transform of x(t).
Substituting x(0-) = 0 and [d/dt x(t)]t=0- = 4, we have:
(s² + 2s + 4)X(s) = 1/s + 4.
Simplifying, we get:
X(s) = (1/s + 4)/(s² + 2s + 4).
Now, we need to find the inverse Laplace transform of X(s) to get the solution x(t).
Using the properties of the Laplace transform, the inverse Laplace transform of X(s) is:
x(t) = (1 - 3e⁻ᵗcos(t) + 4e⁻ᵗsin(t))/5.

c. For the equation x'(t) + 2x(t) = sin(2πt)u(t), where x(0-) = -4:
Taking the Laplace transform of both sides, we get:
sX(s) - x(0-) + 2X(s) = 2π/(s² + (2π)²),
where X(s) is the Laplace transform of x(t).
Substituting x(0-) = -4, we have:
(s + 2)X(s) = 2π/(s² + (2π)²) + 4.
Simplifying, we get:
X(s) = (2π/(s² + (2π)²) + 4)/(s + 2).
Now, we need to find the inverse Laplace transform of X(s) to get the solution x(t).
Using the properties of the Laplace transform, the inverse Laplace transform of X(s) is:
x(t) = 4e⁻²ᵗ + (1 - cos(2πt))/(π).

To know more about Laplace visit:

https://brainly.com/question/32625911

#SPJ11

Answer:

Step-by-step explanation:

-38 = 2x - 10 becomes -28 = 2x, NOT -48 = 2x.

Answer: Hi Duck

Step-by-step explanation:

The partial fraction expansion of the given bilateral z-transform expression is to be found. It can be expressed as ???????? (z) = K1 z / (z - ???? ) + K2 z / (z - ???? ). The steps to determine the values of K1 and K2 will be explained.

To find the partial fraction expansion of the given expression, we first factorize the denominator as (z - ???? )(z - ???? ), where ???? and ???? are the roots of the denominator. In this case, the roots are 1/2 and -1/2.

Next, we express the expression as a sum of two fractions, with each fraction having a distinct root in the denominator. The partial fraction expansion can be written as:

???????? (z) = K1 z / (z - 1/2) + K2 z / (z + 1/2)

To determine the values of K1 and K2, we can multiply both sides of the equation by the common denominator (z - 1/2)(z + 1/2) and equate the numerators. This gives us:

z 2 (z 2 - 1/4) = K1 z(z + 1/2) + K2 z(z - 1/2)

Expanding and collecting like terms, we get:

z 2 (z 2 - 1/4) = (K1 + K2)z 2 + (K1/2 - K2/2)z

By comparing the coefficients of like powers of z on both sides, we can determine the values of K1 and K2. Equating the coefficients, we have:

K1 + K2 = 1

K1/2 - K2/2 = -1/4

Solving these equations simultaneously, we can find the values of K1 and K2, which will complete the partial fraction expansion.

Learn more about coefficients here:

https://brainly.com/question/13431100

#SPJ11

Answer:

7 1/2

Step-by-step explanation:

Let's add the whole numbers first, 3 + 4 = 7

Then, we add the fraction, and since the denominator is the same, there's no need for a change, so we just add the top. 1/8 + 3/8 is 4/8, which can be simplified to 1/2

so answer is 7 1/2

Answer:

Think its - 17 i maybe be wrong

a) The general solution is y = t^4/4 + t^2/2 + A, b) The general solution is y = t^5/20 + t^3/6 + At + B, c) the general solution is x = t^6/120 + t^4/24 + At^2/2 + Bt + C   d) The general solution is y = 3t^2/4 + t + A/2

(a) To find the general solution of y′=4t^3+t, we need to integrate both sides of the equation with respect to t. This gives us:
y = ∫(4t^3+t)dt = t^4/4 + t^2/2 + A
So the general solution is y = t^4/4 + t^2/2 + A, where A is the first constant of integration.

(b) To find the general solution of y′′=4t^3+t, we need to integrate both sides of the equation twice with respect to t. This gives us:

y′ = ∫(4t^3+t)dt = t^4/4 + t^2/2 + A
y = ∫(t^4/4 + t^2/2 + A)dt = t^5/20 + t^3/6 + At + B

So the general solution is y = t^5/20 + t^3/6 + At + B, where A is the first constant of integration and B is the second constant of integration.

(c) To find the general solution of d^3x/dt^3=4t^3+t, we need to integrate both sides of the equation three times with respect to t. This gives us:
d^2x/dt^2 = ∫(4t^3+t)dt = t^4/4 + t^2/2 + A
dx/dt = ∫(t^4/4 + t^2/2 + A)dt = t^5/20 + t^3/6 + At + B
x = ∫(t^5/20 + t^3/6 + At + B)dt = t^6/120 + t^4/24 + At^2/2 + Bt + C

So the general solution is x = t^6/120 + t^4/24 + At^2/2 + Bt + C, where A is the first constant of integration, B is the second constant of integration, and C is the third constant of integration.

(d) To find the general solution of 2y′=3t+2, we need to integrate both sides of the equation with respect to t. This gives us:

2y = ∫(3t+2)dt = 3t^2/2 + 2t + A
y = (3t^2/2 + 2t + A)/2 = 3t^2/4 + t + A/2

So the general solution is y = 3t^2/4 + t + A/2, where A is the first constant of integration.

Learn more about the general solutions:https://brainly.com/question/30465681

#SPJ11

Answer:

\(\Huge\boxed {8}\)

Step-by-step explanation:

area of a rectangle formula

a = length x width

given the area and the width we need to find the length

120=length x 15

to do so we divide the area by the width

120/15=8

so we can conclude that the length of the rectangle is 8

Answer: x = 40, y = 50

Step-by-step explanation:

By the corresponding angles theorem,

Thus, because the (3x-15) and (y+25) angles are supplementary,

The total interest income reported over the life of the bond investment would be $7,500.

To calculate the total interest income, we need to determine the annual interest payment and multiply it by the number of years until maturity. In this case, the bond has a par value of $50,000 and pays interest at a 3% annual rate. The annual interest payment can be calculated by multiplying the par value by the interest rate, which gives us $50,000 * 0.03 = $1,500.

Since the bond has a maturity period of 5 years, we can multiply the annual interest payment by the number of years to obtain the total interest income. Therefore, the total interest income is $1,500 * 5 = $7,500.

Adelphi Company purchased the bonds at 101, which means they bought them at a premium. The straight-line amortization method assumes that the premium or discount is amortized evenly over the life of the bond. However, since the premium was not mentioned explicitly in the question, we can assume that it does not affect the calculation of the total interest income.

In conclusion, over the life of the bond investment, Adelphi Company will report a total interest income of $7,500.

Learn more about interest  here:

https://brainly.com/question/29480777

#SPJ11

Answer: I can’t see the picture resend it

Step-by-step explanation:

7) The slopes of the both the lines are equal so, they are parallel lines

What is slope ?

A line's steepness is determined by its slope. In mathematics, slope is determined by "rise over run" (change in y divided by change in x).

line1:

m =  -2/5  

(x1,y1) = (10, -2)

equation:

y-y1=m(x-x1)

=> y-(-2) = -2/5  (x-10)

=> y+2 = -2/5 x + 4

=> y=  -2/5 x + 4 - 2

=>  y=  -2/5 x + 2

line 2:

(x1,y1) =  (0, 1)

(x2,y2) =  (5, - 1)

slope = m=(y2-y1)/(x2-x1)

                = (-1-1)/(5-0)

                = -2/5

The slopes of the both the lines are equal so, they are parallel lines

To learn more about the slope from the given link

https://brainly.com/question/16949303

#SPJ1