A manufacturing company uses two different machines, A and B, each of which produces a certain item part. The number of defective parts produced by each machine is about 1 percent. Suppose two independent random samples, each of size 100, are selected, where one is a sample of parts produced by machine A and the other is a sample of parts produced by machine B. Which of the following is true about the sampling distribution of the difference in the sample proportions of defective parts?
A The mean is 0 and the distribution is approximately normal
B The mean is 0 and the distribution will not be approximately normal
C The mean is 0.01 and the distribution is approximately normal
D The mean is 0.01 and the distribution will not be approximately normal.
Ε The mean is 1 and the distribution is approximately normal.

Answers

Answer 1

Answer:

B: The mean is 0 and the distribution will not be approximately normal

Step-by-step explanation:

It is true that the mean is 0 because it is the difference in the population proportions, 0.01−0.01. However, normality cannot be assumed because the sample sizes are not large enough.

Answer 2

The sample distribution is defined as the probability distribution of a given sample based on statistics.

The correct option is (a).

Given:

The defective parts produced by each machine is 1%.

The sample Size is 100.

Calculate the proportion of the defective parts.

[tex]\dfrac{1}{100}=0.01[/tex]

Thus, the mean of each machine is 0.01.

Now, the mean difference between both machine is 0 and proportion will be normally distributed.

Learn more about sample distribution here:

https://brainly.com/question/10554762


Related Questions

Find x if:
- B is between A & C;
-AB = x + 5;
-BC = 2(x-3); and
-AB ~= BC

Answers

Answer:

The value of x = 11

Step-by-step explanation:

Given

B is between A and C.AB = x+5BC = 2(x - 3)[tex]{\displaystyle {\overline {AB}[/tex] ≅ [tex]{\displaystyle {\overline {BC}[/tex]

Determining the value of x

As B is between A and C, so

[tex]{\displaystyle {\overline {AB}[/tex] ≅ [tex]{\displaystyle {\overline {BC}[/tex]

as

AB = x+5BC = 2(x - 3)

so

x + 5 = 2(x-3)

x+5 = 2x-6

2x-x = 5+6

x = 11

Therefore, the value of x = 11

Solve by elimination:
2x + 4y = 34
x+4y = 27
A (7,-5)
B (6,6)
(7,5)
(5,7)

Answers

Answer:

(7,5)

Step-by-step explanation:

{2x + 4y = 34

{4y = 27 - x

2x + 27 - x = 34

x=7

4y = 27 - 7

y = 5 so the answer is ( 7,5)

(7,5) hope this helps

What is the solution to the system of equations below?

X+ 3y = 15 and 4x+2y= 30

O (6,3)

O (3,6).

O (7,-6)

O (-6, 7)

Answers

Answer:

6,3

Step-by-step explanation:

given equtions are

x+3y=15______(1)

4x+2y=30______(2)

multiplying (1) by 4

on solving, 4x+12y=60_____(3)

substracting eqution (3) and (2)

4x+12y-(4x+2y)=60-30

⇒10y=30

on solving,

y=3

substituting the value of y in equation (1)

x+3(3)=15

on solving,

x=6

Answer:

A

Step-by-step explanation:

(6,3)

In Game 1, Eli struck out 25 times in 75 times at bat.
In Game 2, he struck out 30 times in 100 times at bat.
In Game 3, he struck out 37 times in 120 times at bat.
struck out
'at bat
What proportion represents the percent of
strike outs per at bats?

Answers

Answer:

p = 31.19%

Step-by-step explanation:

Proportions and Percentages

A proportion is calculated as a division between two numbers. The result can be given as a decimal or as a percentage.

If we want to calculate the percent of a number N with respect to another number M, the formula is:

[tex]\displaystyle p=\frac{N}{M}*100\%[/tex]

Eli had some performances when playing baseball. Struck out 25 times in 75 times at bat, 30 times in 100 at-bats, and 37 times in 120 at-bats.

The total struck outs were: N= 25+30+37=92 and the total at-bats were: 75+100+120=295. The proportion of strikeout ber at-bats is:

[tex]\displaystyle p=\frac{92}{295}*100\%[/tex]

p = 31.19%

Planes A and B intersect.

Vertical plane B intersects horizontal plane A. Point W is on the line where the planes intersect. Vertical line m is on the left half of plane A. Horizontal line n intersects line m at point X and line k at point W. Line l is on the lower half of plane B with point Y.

Which describes the intersection of plane A and line m?

line k
line n
point X
point W

Answers

Answer:

Point x

Step-by-step explanation:

got it right on edge 2021

Answer:

c

Step-by-step explanation:

Find the area of this parallelogram

Answers

Answer:

260cm

Step-by-step explanation:

20x13=260

i will mark brainliest

Answers

the answer is 10c=80

Marianna just completed her findings in her investigation of the importance
of sunlight in the growth of plants. She has to submit a report of no less than
4,900 words in 15 pages. She can only use two types of font for her report.
The normal font size allows 300 words per page while the smaller italic font
allows 350 words per page. What is the maximum number of pages in her
report that can be set using the normal font size?
Please I need help!!!!!

Answers

Answer:

17 pages

Step-by-step explanation:

if not that then 15 since it says "less than 4,900 words in 15 pages"

The diffence between a number x and 13 is 18

Answers

18+ 13 gives you 31 so the difference between 13 and 31 is 18.

the answer is 31

Need help rlly quick (3)

Answers

G(x) = -4

Have a great day!

Answer:

-2 negative

Step-by-step explanation:

so if x = 0 then forget it is there then do 2-4=negative 2

hope this helped

HELP PLEASE ITS DUE!!!! PLEASE I NEED HELPPPPPPP

Answers

Hey, so basically just plug in the x values for x in the equation. First table the first x value is -1 so just plug it in to 3x so: 3(-1)= -3. That’s your y.

300 students took a survey on a new recycling project. The percent of students who supported the recycling project was greater than 50% but less than 75%. How many students supported the recycling project? ​

Answers

Answer:76

Step-by-step explanation:

):!/

Calculate the volume, in cubic centimeters, of a box which is 125 cm long, 37 cm wide, and 68 cm high. Report your answer with correct significant figures in cubic centimeters.

Answers

Answer:

[tex]Volume = 314500cm^3[/tex]

Step-by-step explanation:

Given

[tex]Length = 125cm[/tex]

[tex]Width = 37cm[/tex]

[tex]Height = 68cm[/tex]

Required

Determine the volume

Volume is calculated as:

[tex]Volume = Length * Width * Height[/tex]

Substitute values for Length, Width and Height

[tex]Volume = 125cm * 37cm * 68cm[/tex]

[tex]Volume = 314500cm^3[/tex]

Hence, the volume of the box is [tex]314500cm^3[/tex]

write the equation of a line with the given two points in slope intercept form.
(5,1) (-3,2)
PLZ HELP!

Answers

Answer:

y = -⅛x + 1⅝

Step-by-step explanation:

anyone know the answer ?

Answers

Answer:

y ≥ -1x +2

Step-by-step explanation:

Help me please i really need it so i can relax this weekend

Answers

1. Recrystallization
2. Transpiration
3. Atmosphere
4. Evaporation
5. Gravity
6. Precipitation
7. Change of state

Hope you have a good weekend

{35, 42, 49, 56, ...} finite or infinite?

Answers

Answer:

infinite

Step-by-step explanation:

Determine whether the relation is or is not a function.

Answers

Answer:

Not a function because it does not pass the Vertical Line Test.

6) Steven receives $5.75 per hour and 3% commission on sales. One week he worked 40 hours and sold $2,500
worth of goods. How much did he earn that week?

Answers

Answer:

$230 for the hourly pay of 5.75×40 and $75 for the 2500x3% so total pay is $305.

Find the value of the expression below when x= 3.

x2 + 5

Answers

Answer:

11

Step-by-step explanation:

x*2 + 5

Subtitute

3*2 + 5

6 + 5

11

Answer:

11

Step-by-step explanation:

x is 3

2x+5

2(3)+5

6+5

11

solve the equation 11.9=-23.8x

Answers

Answer:

x = − 0.07983193

Step-by-step explanation:

The function y= x2 - 10x+ 31 has a
value of

Answers

Answer:

y = 6 at x = 5

Step-by-step explanation:

It is assumed the question is about finding the minimum value as the given function has no maximum value, it is + ∞ as the coefficient of x² is positive

The minimum/maximum value of a quadratic function is the vertex, which is at:

x = -b/2a

For the given function y = x² -10x + 31, the vertex is:

x =  - (-10)/2*1 = 10/2 = 5

The value of y at this point is:

y = 5² - 10*5 + 31 = 25 - 50 + 31 = 6

The point is

(5, 6)

Pe nu cerc de central O se considera punctul ABC astfel incat punctele A B C sunt coliniare .Care este masura unghiului ACB

Answers

What is unghiului I think you misspelled it and I cannot read the last part

the ratio of boys to girls in a class is3:2 there are 25 students in this class how many are girls how many are boys.

Answers

Answer:

Out of 25, the number of girls to boys is 15/10, which is equivalent to 3/2.

Step-by-step explanation:

ummmmm can someone help me on this :)

Answers

Your answer it’s Y= - 3 over 4
It will be y=-4/3 hope it helps !!!!



mZJ and m M are base angles of isosceles trapezoid JKLM. If mZJ = 18x + 8 and m_M=11x + 15 find m2K.

K

L

M

Answers

The question is incomplete. Here is the complete question.

m∠J and m∠Kare base angles of an isosceles trapezoid JKLM.

If m∠J = 18x + 8, and m∠M = 11x + 15 , find m∠K.

A. 1

B. 154

C. 77

D. 26

Answer: B. m∠K = 154

Step-by-step explanation: Isosceles trapezoid is a parallelogram with two parallel sides, called Base, and two non-parallel sides that have the same measure.

Related to internal angles, angles of the base are equal and opposite angles are supplementary.

In trapezoid JKLM, m∠J and m∠M are base angles, so they are equal:

18x + 8 = 11x + 15

7x = 7

x = 1

Now, m∠K is opposite so, they are supplementary, which means their sum results in 180°:

m∠J = 18(1) + 8

m∠J = 26

m∠K + m∠J = 180

m∠K + 26 = 180

m∠K = 154

The angle m∠K is 154°

Cheryl is buying lace for her dance costume. One foot of lace costs 3 dollars. How much does each amount cost?

3/4 of a foot?

Answers

Answer:

3/4 of a foot will cost $2.25.

Step-by-step explanation:

This question is solved by rule of three, due to proportions.

One foot of lace costs 3 dollars. How much is 3/4 of a foot going to cost?

1 foot - 3 dollars

3/4 foot - x dollars

[tex]x = 3 \times \frac{3}{4} = \frac{9}{4} = 2.25[/tex]

So

3/4 of a foot will cost $2.25.

Brad owns a successful corporation that has a substantial earnings and profits. During the year, the following payments were made by corporation

Answers

Answer:

That's great for Brad, wait are you talking about the Brad from clash royale? if so im impressed

Step-by-step explanation:

The system of equations y=-2x+3 and y=x is graohed. What is the solution to the system of equations

Answers

Answer:

The solution to this system of equations is y = 1, x = 1

Step-by-step explanation:

We know that...

(1) y = - 2x + 3

(2) y = x

Then we just substitute the value of x that we are given in equation (2).

And so we get....

y = -2x + 3

x = - 2x + 3

3x = 3

x = 1

From equation (2) we know that y = x, so since x equals 1 y is also 1. There for the solution to this system of equations is (1,1)

Explain how to round 74.685 to the nearest hundredth

Answers

Answer:

the answer will be 74.700

Step-by-step explanation:

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