It is desirable to take as large a sample as possible when trying to estimate a population value because the Rule for Sample Means suggests that the standard deviation of the frequency curve for the samples will decrease as the sample size increases. Therefore, a larger sample size will result in a more accurate estimate of the population value.
The Rule for Sample Means is a statistical principle that applies to the distribution of sample means. It states that the standard deviation of the frequency curve for the sample means will be the population standard deviation divided by the square root of the sample size. This means that the larger the sample size, the smaller the standard deviation of the frequency curve.
A smaller standard deviation indicates that the sample means are more tightly clustered around the population mean. Therefore, taking a larger sample will result in a better estimate of the population value since the sample means are more representative of the population.
Therefore, it is desirable to take as large a sample as possible when trying to estimate a population value.
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3. (10 points) The following linear programming problem has no feasible solution. min 0x₁ + 0x₂ 3x₁ + 2x₂ ≥ 30 2x1 + x₂ ≥ 40 5x₁ + 3x₂ ≤ 50 X₁, X₂ 20 s. t. (1) (2) Assume that we have • the penalty cost $100 for failing to satisfy 1 unit of 30 in the 1st constraint; the penalty cost $50 for failing to satisfy 1 unit of 40 in the 2nd constraint; also $10 penalty is assessed for each unit exceeding 50 in the 3rd constraint. • Please add some deviational variables on these three constraints to formulate this problem as a goal programming problem to minimize the penalty cost (just write a linear programming model with explanations on new variables).
To minimize the penalty cost, the linear programming problem is formulated as a goal programming problem by introducing deviation variables (d₁, d₂, d₃) and surplus variables (s₁, s₂), with the objective function Z = 100d₁ + 50d₂ + 10d₃ and the corresponding constraints.
To formulate the given linear programming problem as a goal programming problem to minimize the penalty cost, we can introduce deviation variables on each constraint and assign penalty weights to these variables. The goal is to minimize the total penalty cost:
d₁: Deviation variable for the first constraint (3x₁ + 2x₂ ≥ 30)
d₂: Deviation variable for the second constraint (2x₁ + x₂ ≥ 40)
d₃: Deviation variable for the third constraint (5x₁ + 3x₂ ≤ 50)
We also need to introduce positive surplus variables to ensure the original constraints are not violated:
s₁: Surplus variable for the first constraint (3x₁ + 2x₂ ≥ 30)
s₂: Surplus variable for the second constraint (2x₁ + x₂ ≥ 40)
Now, let's formulate the linear programming model with penalty costs and deviation variables:
Minimize:
Z = 100d₁ + 50d₂ + 10d₃
Subject to:
3x₁ + 2x₂ - d₁ + s₁ = 30
2x₁ + x₂ - d₂ + s₂ = 40
5x₁ + 3x₂ + d₃ ≤ 50
x₁, x₂, d₁, d₂, d₃, s₁, s₂ ≥ 0
The objective function minimizes the penalty cost by summing the products of deviation variables and their respective penalty weights.
The first constraint includes the deviation variable d₁ to measure the deviation from the minimum requirement of 30. The surplus variable s₁ ensures that the original constraint is not violated.
Similarly, the second constraint includes the deviation variable d₂ and the surplus variable s₂.
The third constraint includes the deviation variable d₃ to penalize any excess beyond the upper limit of 50.
All decision variables (x₁, x₂, d₁, d₂, d₃, s₁, s₂) are non-negative.
Solving this goal programming problem will minimize the penalty cost associated with failing to satisfy the original constraints.
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Simplify
(2m^4)^4*-n^5
this is the last questions but I'm confused
Answer:
-16m^16 n^5
Step-by-step explanation:
(2m^4)^4*-n^5
= 2^4*m^16*(-n^5)
= 16 m^16 * (-n^5)
= -16m^16 n^5
hopefully this will help
Remember the rule
(a^m)^n=a^mnis the steepest tangent vector unique? what is its length? if it were longer, could it still be steepest?
In 2D, tt can be extended on other side to any length you deserve. But if you talk of sub tangent, then it has particular length.
In 3D, on the surface talking of size of tangent plane it has no particular size. It can be extended on either side to any extent you desire.
In 2D:
At a particular point P(h,k) to a curve y=f(y). Tangent vector is given by equation y(k) = f(h,k)*(x-k) which is unique for that point on the curve. Taking of length a tangent has no particular length. It can be extended on other side to any length you deserve. But if you talk of sub tangent, then it has particular length.
In 3D:
As a particular point P(h,k,1) to a surface f(x,y,z) = 0. Tangent plain is given by equation F(x)(x-h)+F(y)(y-k)+F(z)(z.1)=0 which is unique. For that point on the surface talking of size of tangent plane it has no particular size. It can be extended on either side to any extent you desire.
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Help please it’s emergency: I don’t understand how to do number 7
With a greater mean value , we can conclude that the sixth period class test was better than the second period .
Calculating the mean of each classSecond period class:
Mean = (55+70+6*75+6*80+2*85+3*90+95)/20
Mean = 1590/20 = 79.5
Sixth period class:
Mean = (65+3*75+5*80+6*85+3*90+2*95)/20
Mean = 1660/20 = 83
Therefore, From the mean values , we can infer that students performed better in test for the sixth period class than the second .
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Are the two triangles similar?
Answer:
Yes
Step-by-step explanation:
The missing angle in triangle DER is 42 (as angles in a triangle add up to 180) and the missing angle in TVA (LOKI lol ) is 110 (as angles in a triangle add up to 180) .
Since all angles are equal the triangles must be similar .
Hope this helped and have a good day
What is the domain? I need help on this problem
The domain of the function \(f(x) = \sqrt{\frac{1}{3}x + 2\) is (d) x ≥ -6
How to determine the domain of the functionFrom the question, we have the following parameters that can be used in our computation:
\(f(x) = \sqrt{\frac{1}{3}x + 2\)
Set the radicand greater than or equal to 0
So, we have
1/3x + 2 ≥ 0
Next, we have
1/3x ≥ -2
So, we have
x ≥ -6
Hence, the domain of the function is (d) x ≥ -6
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Suppose the inflation rate is 7% per year. How much would a $24 pair of sneakers cost in 8
years? Estimate your answer to 2 places after the decimal.
Answer:
the answer to your question is $25.81
To the nearest hundredth, what is the area of a circle with a radius of 4 units?
A. 42.85 square units
B. 25.13 square units
C. 12.57 square units
D. 50.27 square units
Option D 50.27 square units.
How to find the area of a circle?The area of a circle is related to its radius and a mathematical constant π whose approximated value is 3.142, and the area of the circle is πr².
How to Round off to the nearest hundredth?Add 1 to the hundredth if the digit following the hundredth is more than or equal to 5. Remove the digit if not.
The solution to the given problemThe area of the circle is 3.142*4*4 = 50.272
Rounding off to the hundredth as after the hundredth place there is a 2 we will round off the answer to 50.27
The area of the circle with a radius of 4 units is 50.27.
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Sophia earns $16 per hour and worked 7.5 hours per day. She spent
$18 per workday on lunch. Sophia saves a quarter of her remaining
money in her savings per week.
A.
Write an expression representing the amount of money
Sophia put in her savings account at the end of the week.
B. How much money did she put in her savings?
The answers to both subparts are shown:
(A) The expression is: 4x = 714
(B) Money she put in her savings account each week: $178.5
What is an expression?An expression, often known as a mathematical expression, is a finite collection of symbols that are well-formed in accordance with context-dependent principles.
Any mathematical statement that includes numbers, variables, and an arithmetic operation between them is known as an expression or algebraic expression.
In the phrase 4m + 5, for instance, the terms 4m and 5 are separated from the variable m by the arithmetic sign +.
Let's assume she works 7 days a week.
Then 7.5 * 16 = $120 (1-day earning)
30 days: 120 * 30 = 840
$18 each day on lunch: 18 * 7 = $126
Remaining: 840 - 126 = $714
A quarter of $714: 714/4 = $178.5
(A) The expression will be:
4x = 714
(B) Money she put in her savings account each week:
4x = 714
x = 714/x
x = $178.5
Therefore, the answers to both subparts are shown:
(A) The expression is: 4x = 714
(B) Money she put in her savings account each week: $178.5
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Solve for d.
-2 – 9d = -10d - 9
Answer:
d = -9
Step-by-step explanation:
-2 - 9d = -10d - 9 (combine liked terms)
+2 +2 (added two to each side)
-9d = -10d - 9 (combined liked terms again for d this time)
+10d +10d
1d = -9 (isolate x so divde one from each side)
d = -9
9 x 3.14, show me steps btw
Answer:
9x3.14=28.26
Step-by-step explanation:
1 3
3.14
x 9
28.26
multiply 4x9 Cary the 3 put the 3 above the 1 then multiply 1x9 the add the three then carry the 1 put it above the 3 the multiply 3x9 the you add you final total and bring the decimal doe to we’re it becomes 28.26
using the parallelogram formed by PiPa = 5 1 + 7 j + 5 k and Pi P3 = 5 1 as a base, create a parallelepiped with side Pi P5 where Pi = (0,0,0) and P5 (1,0, 5). Find the volume of this parallelepiped. Volume of parallelepiped
The volume of the parallelepiped is approximately 130.12 cubic units.
To create the parallelepiped, we need to find the vectors PiP3 and PiP5.
PiP3 = P3 - Pi = (5,1,0) - (0,0,0) = (5,1,0)
PiP5 = P5 - Pi = (1,0,5) - (0,0,0) = (1,0,5)
We can use the cross product of these two vectors to find the area of the base:
PiP3 x PiP5 = (5,1,0) x (1,0,5) = (-5,-25,1)
The magnitude of this cross product gives us the area of the base:
|PiP3 x PiP5| = √(5² + 25² + 1²) = √651
To find the volume of the parallelepiped, we need to multiply the area of the base by the height, which is the length of the PiP5 vector:
Volume = |PiP3 x PiP5| × |PiP5| = √651 × √26 = √16926 ≈ 130.12
Therefore, the volume of the parallelepiped is approximately 130.12 cubic units.
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Using the formula y = kx
If y is 27 when x is 3, what is the constant of variation?
Answer:
y=kx
y/x=kx/x (divided both side by x to find k)
k=y/x
k=27/3
k=9.
the clock show the time a dance class lasting 55 minutes started what time will the class end
Answer:
Add 55 minutes to the time the class started to find out when the class ends
"What does e to the ipi mean?
"
The mathematical phrase "e to the ipi" is composed of the imaginary unit i (the square root of -1 raised to the power of pi), which is symbolized by "pi," and the mathematical constant "e" (Euler's number).
The expression "e to the ipi" may be expressed as follows:
\(e^{(i*pi)}\)
The following formula is known as Euler's formula:
\(e^{(ipi)}\) = cos(pi) + isin(pi)
where "cos" and "sin" are the sine and cosine functions, respectively.
We may reduce this formula to using the cosine and sine trigonometric identities.
\(e^{(i*pi)}\) = -1
"e to the ipi" hence equals a negative one. This startling and outstanding finding ties together various crucial mathematical ideas, including calculus, complex numbers, and trigonometry.
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sin(2x)cos(7x) - cos(2x)sin(7x) = 0.1
Answer:
x≈-0.0200335+2kπ/5
x≈-0.648352+2kπ/5
Step-by-step explanation:
sin(-5x)=0.1
-sin(5x)=0.1
sin(5x)=-0.1
sin(5x)=1/10
5x=arcsin(- 1/10)
5x=π-arcsin(- 1/10)
5x=π-arcsin(- 1/10)
5x=π-arcsin(- 1/10)+2kπ
5x=π-arcsin(- 1/10)+2kπ
x=arcsin (1/10)/5 + 2kπ/5
x=arcsin (1/10)/5 + 2kπ/5
x≈-0.0200335+2kπ/5
x≈-0.648352+2kπ/5
The number of patients treated at Dr. Jason's dentist office each day was recorded for seven days: 3, 8, 11, 22, 17, 5, 4. Using the given data, find the mean, median, and mode for this sample. A. mean: 10, median: 8, mode: none B. mean: none, median: 8, mode: 10 C. mean: 8, median: 10, mode: none D. mean: 14, median: 10, mode: 8
Answer: A. mean: 10, median: 8, mode: none
Step-by-step explanation:
Given : The number of patients treated at Dr. Jason's dentist office each day was recorded for seven days: 3, 8, 11, 22, 17, 5, 4.
First we arrange it order.
3, 4, 5, 8, 11, 17, 22
Mean = (Sum of observations) ÷ (Number of observations)
Number of observations = 7
Sum of observations = 3+4+5+8+11+17+22 =70
Mean = 70 ÷7 = 10
Median = Middle-most value
= 8
Mode = Most repeatted value
= none
Hence, the mean, median, and mode for this sample = A. mean: 10, median: 8, mode: none
For a given week, latoya's coffee house has available ounces of a grade coffee and ounces of b grade coffee. these are blended into -pound packages as follows: an economy blend that contains ounces of a grade coffee and ounces of b grade coffee, and a superior blend that contains ounces of a grade coffee and ounces of b grade coffee. (the remainder of each blend is made of filler ingredients.) there is a profit on each economy blend package sold and a profit on each superior blend package sold. assuming that the coffee house is able to sell as many blends as it makes, how many packages of each blend should it make to maximize its profit for the week?
Certainly! Let's consider an example with arbitrary numbers to illustrate the concept.
Let's assume Latoya's Coffee House has the following values:
Available ounces of grade A coffee: 100 ounces
Available ounces of grade B coffee: 80 ounces
Economy blend composition: 4 ounces of grade A coffee and 2 ounces of grade B coffee
Superior blend composition: 5 ounces of grade A coffee and 3 ounces of grade B coffee
Profit per economy blend package: $5
Profit per superior blend package: $7
Now, we can proceed to determine the number of packages of each blend that should be made to maximize the profit for the week.
Let's say Latoya's Coffee House produces 'x' packages of the economy blend and 'y' packages of the superior blend.
Profit for the economy blend: P_economy = 5 * x
Profit for the superior blend: P_superior = 7 * y
The total profit for the week, P_total, is given by:
P_total = P_economy + P_superior
P_total = 5x + 7y
We need to maximize P_total while considering the available ounces of grade A and grade B coffee.
The constraints are as follows:
4x + 5y ≤ 100 (Available ounces of grade A coffee)
2x + 3y ≤ 80 (Available ounces of grade B coffee)
Additionally, 'x' and 'y' should be non-negative since we cannot produce negative packages.
To solve this linear programming problem and find the optimal values for 'x' and 'y', we can use optimization techniques such as the simplex method or graphical methods.
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Hudson bay wants price MSRP 59.99 acquire sheets for
22.99 what is markup on cost percentage
The markup on cost percentage for Hudson Bay's acquisition of sheets priced at MSRP 59.99 for 22.99 is 61.68%.
To calculate the markup on cost percentage, we can use the following formula:
Markup on Cost Percentage = ((Selling Price - Cost Price) / Cost Price) x 100
In this case, the cost price of the sheets is 22.99, and the selling price (MSRP) is 59.99. Plugging these values into the formula, we get:
Markup on Cost Percentage = ((59.99 - 22.99) / 22.99) x 100
Markup on Cost Percentage = (37 / 22.99) x 100
Markup on Cost Percentage = 1.6103 x 100
Markup on Cost Percentage = 61.68%
Therefore, Hudson Bay's markup on cost percentage for acquiring sheets priced at MSRP 59.99 for 22.99 is 61.68%.
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Convert 10 Nm to tex count.
10 Nm is approximately equal to 1,019.69 tex. The unit "tex" is a measurement of linear density commonly used in the textile industry.
To convert 10 Nm (Newton meters) to tex, we need to determine the linear density of the material in grams per 1,000 meters.
The conversion formula is:
tex = (Nm * 1,000) / 9.81
Where Nm represents Newton meters and 9.81 is the approximate value of the acceleration due to gravity in m/s².
Let's calculate the conversion:
tex = (10 Nm * 1,000) / 9.81
tex ≈ 1,019.69 tex
Therefore, 10 Nm is approximately equal to 1,019.69 tex.
This means that if you have a material with a linear density of 1,019.69 tex, it would weigh approximately 1,019.69 grams per 1,000 meters of the material.
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Find the missing term in the geometric sequence. 180,___,5
Answer:
30.
Step-by-step explanation:
first term = a
3r term = ar^2
So here ar^2/ a = r^2
r^2 = 5/180 = 1/36
r = 1/6
So missing term = 180 * 1/6 = 30.
Max is taking 38 children for rides in
his boat. He can only take 5 children
at a time. How many rides will it take
for all of the children to have one turn?
Answer: 8 turns
Step-by-step explanation: 5 children at a time, so 5*8=40, which is the closest to 38
Which is the graph of f(x)
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4
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-3 -2 -14
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-2.5(x-4)=-3+4
What is the solution to the equation
thank me the answer is x=3.6
On a graph, an equilibrium point is where 1.a supply curve and a demand curve meet. 2.a supply curve is higher than a demand curve. 3.the supply and demand curves head up. 4.the supply and demand curves head down.
The correct answer is 1. An equilibrium point, also known as a market-clearing price, is where the supply curve and demand curve intersect and the quantity supplied equals the quantity demanded.
This is the point where there is no excess supply or excess demand in the market, and the price is stable.
In economic theory, the concept of an equilibrium point is crucial in understanding the behavior of markets. When there is a surplus of supply or demand, the market will adjust to restore equilibrium. If the price is too high, the quantity supplied will increase and the quantity demanded will decrease until the equilibrium point is reached. If the price is too low, the quantity demanded will increase and the quantity supplied will decrease until the equilibrium point is reached. Therefore, understanding the equilibrium point is essential for making informed decisions about pricing, production, and investment in a market.
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How do you solve question 6? (attachment included)
Answer:
9 i think
Step-by-step explanation:
which graph shows the solution set of the inequality 2.9 (x + 8) less-than 26.1
Answer:
C
Step-by-step explanation:
Trust me bro
Determine whether the relationship is an inverse variation or not. Explain.
The relationship is not an inverse variation because the product xy is not a constant.
What is Inverse variation?Inverse variation is the relationship between two quantities whereby an increase in one quantity cause a decrease in the other quantity.
In this type of variation the product of the two quantities is constant.
Analysis:
if x is one quantity and y is the other,
Mathematically, x = \(\frac{k}{y}\)
Where, k is a constant,
it means k = xy
from the table, when, x =2, y = 409, xy = 2 x 409 = 818
Also, x = 3, y = 240, xy = 3 x 240 = 720
Therefore, 720 not equal to 818.
In conclusion, The product xy is not a constant, so the relationship is not an inverse variation.
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Write the missing numbers in the boxes below.
6?1
+ ?=950
Answer: 651+299=950
Explanation? Do you need one?
Find the largest six digits number which is divisible by 120 exactly.
Answer:
999,960
Step-by-step explanation:
let x be a multiple of 120
120x ≤ 999,999
999,999 / 120 = 8333.325
8333 ≤ x ≤ 8334
8333(120) = 999,960
8334(1200) = 1,000,080 this is a 7-digit number
Therefore, the largest 6-digit number that is exactly divisible by 120 is 999,960