1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Masja [62]
3 years ago
15

A manufacturer of cell phone screens has found that 5 percent of all screens produced have defects. Let pd represent the populat

ion proportion of all cell phone screens with a screen defect, therefore pd=0.05. For the sampling distribution of the sample proportion of cell phone screens from this manufacturer with a screen defect for sample size 400, μpˆd=0.05. Which of the following is the best interpretation of μpˆd=0.05 ?
For a randomly selected cell phone screen from this population, the mean number of screen defects for the selected screen will be equal to 0.05.

For a randomly selected cell phone screen from this population, the mean number of screen defects for the selected screen will be equal to 0.05.
A

For every sample of size 400 from this population, the proportion of cell phone screens with a screen defect will be 0.05.

For every sample of size 400 from this population, the proportion of cell phone screens with a screen defect will be 0.05.
B

For all samples of size 400 from this population, the mean number of screen defects for the samples is 0.05.

For all samples of size 400 from this population, the mean number of screen defects for the samples is 0.05.
C

For all samples of size 400 from this population, the mean of all resulting sample proportions of cell phone screens with a screen defect is 0.05.

For all samples of size 400 from this population, the mean of all resulting sample proportions of cell phone screens with a screen defect is 0.05.
D

For all samples of size 400 from this population, the standard deviation of all resulting sample proportions of cell phone screens with a screen defect is 0.05.
Mathematics
2 answers:
AnnZ [28]3 years ago
8 0

Answer:

For all samples of size 400 from this population, the mean of all resulting sample proportions of cell phone screens with a screen defect is 0.05.

Step-by-step explanation:

College Board

expeople1 [14]3 years ago
3 0

Answer:

A

Step-by-step explanation:

B,.C and D are wrong because

B states all. The hypothesis stated above does not mention all samples

.

C. Mentions a mean. Per the hypothesis, the percentage of defective screens was an actual number and not a mean.

D. The question is not referring to a standard deviation

You might be interested in
What is the solution to the system of equations shown below?
Alexxandr [17]

Answer:

  b.  (1, 3, ­-2)

Step-by-step explanation:

A graphing calculator or scientific calculator can solve this system of equations for you, or you can use any of the usual methods: elimination, substitution, matrix methods, Cramer's rule.

It can also work well to try the offered choices in the given equations. Sometimes, it can work best to choose an equation other than the first one for this. The last equation here seems a good one for eliminating bad answers:

  a: -1 -5(1) +2(-4) = -14 ≠ -18

  b: 1 -5(3) +2(-2) = -18 . . . . potential choice

  c: 3 -5(8) +2(1) = -35 ≠ -18

  d: 2 -5(-3) +2(0) = 17 ≠ -18

This shows choice B as the only viable option. Further checking can be done to make sure that solution works in the other equations:

  2(1) +(3) -3(-2) = 11 . . . . choice B works in equation 1

  -(1) +2(3) +4(-2) = -3 . . . choice B works in equation 2

7 0
3 years ago
What does the term American Dream mean to you?
iragen [17]
The American dream that means to me is being rich and famous
7 0
2 years ago
write an equarion of point slope form of the line that lasses through the point (2, -8) and has a slope of 4​
RSB [31]

Answer:

y = 4x -16

Step-by-step explanation:

y+8= 4(x-2)

y+8=4x-8

y= 4x - 16

3 0
3 years ago
PLEASE HELP ASAPPP!!! 15PT QUESTION!!! Suppose that a ball is rolling down a ramp. The distance traveled by the ball is given by
Sever21 [200]

Answer:

The average velocity of the ball is 137.5 \:ft/sec

Step-by-step explanation:

First find the velocities at given times and then form two points. Calculate the slope to find the average velocity. The two points are:

\left(6,\:396\right)\quad and \quad \:\left(6.5,\:464.75\right)

\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}=\frac{464.75-396}{6.5-6}

m=137.5

Best Regards!

5 0
3 years ago
¿Cuál de las siguientes fracciones es<br>equivalente al decimal 0.18?<br>~= Ello​
kow [346]

Answer:

? necesitamos  más  información..  ¿dónde están los fracciones?

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • If the lease factor is given 0.00045, what interest rate is that equivalent to
    7·1 answer
  • Explain how to write (2y)^3/2 in radical form.
    8·1 answer
  • Find an order pair (x,y) that is a solution to the equation <br> X-4y=4
    14·1 answer
  • How to simplify g(x) = -2(x-1)(x+5)
    5·1 answer
  • Penny makes 5 liters of applesauce. She saves 0.24 liter for dinner and puts the rest in jars. If each jar holds 0.68 liter, how
    5·2 answers
  • 7xy + 8z - 2z + 12xy + 10z
    10·1 answer
  • A shop produces 39 wetsuits every 2 weeks. how long will it take the shop to produce 429 wetsuits
    14·2 answers
  • The weights (in ounces) of 28 tomatoes are listed below. 1.1 1.6 1.8 1.9 2.0 2.3 2.3 2.5 2.5 2.5 2.5 2.6 2.6 2.6 2.8 2.9 2.9 3.0
    15·1 answer
  • A two-digit integer is randomly selected. What is the probability that its digits are
    6·1 answer
  • Find x<br> (4+25)<br> (6x+20)<br> (3x+25)
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!