QUESTION 10 A sample of 40 is taken from a population where the population standard deviation is known to be 5. What z estimate of the mean, rounded to five decimal places? should be used for an 78.7% confidence a 12 O A. 1.24518 O B. 1.24526 O C. 1.24541 O D. 1.24554 O E. 1.24535 QUESTION 11 If the acceptable margin of error decreases for an interval estimate for proportion, the minimum sample size needed to make that estimation will O A. increase because a larger sample will have larger error O B. not change because the z does not depend on sample size a 12 O C. decrease because a smaller sample allows for decreased accuracy DELL
QUESTION 10 A sample of 40 is taken from a population where the population standard deviation is known to be 5. What z estimate of the mean, rounded to five decimal places? should be used for an 78.7% confidence a 12 O A. 1.24518 O B. 1.24526 O C. 1.24541 O D. 1.24554 O E. 1.24535 QUESTION 11 If the acceptable margin of error decreases for an interval estimate for proportion, the minimum sample size needed to make that estimation will O A. increase because a larger sample will have larger error O B. not change because the z does not depend on sample size a 12 O C. decrease because a smaller sample allows for decreased accuracy DELL
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:QUESTION 10
A sample of 40 is taken from a population where the population standard deviation is known to be 5. What z
should be used for an 78.7% confidence
a 12
estimate of the mean, rounded to five decimal places?
O A. 1.24518
O B. 1.24526
O C. 1.24541
O D. 1.24554
O E. 1.24535
QUESTION 11
If the acceptable margin of error decreases for an interval estimate for proportion, the minimum sample size needed to make that estimation will
O A. increase because a larger sample will have larger error
O B. not change because the z
does not depend on sample size
a12
O C. decrease because a smaller sample allows for decreased accuracy
DELL
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