would be content with 95% confidence. How does the decrease in confidence affect the sample size required? Click the icon to view a partial table of critical values ..... A 90% confidence level requiressubjects (Round up to the nearest subject) A 95% confidence level requires subjects (Round to the nearest subject) How does the decrease in confidence affect the sample size required? OA. The sample size is the same for all levels of confidence OB. Decreasing the confidence level decreases the sample size needed. OC. Decreasing the confidence level increases the sample size needed.
would be content with 95% confidence. How does the decrease in confidence affect the sample size required? Click the icon to view a partial table of critical values ..... A 90% confidence level requiressubjects (Round up to the nearest subject) A 95% confidence level requires subjects (Round to the nearest subject) How does the decrease in confidence affect the sample size required? OA. The sample size is the same for all levels of confidence OB. Decreasing the confidence level decreases the sample size needed. OC. Decreasing the confidence level increases the sample size needed.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Transcribed Image Text:Partial critical value table
Critical Value, Za/2
Level of Confidence,
(1- a) • 100%
Area in Each Tail,
2
1.645
0.05
90%
1.96
0.025
95%
2.575
0.005
99%
Print
Done
DELL
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Transcribed Image Text:A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 2 points with 99% confidence assuming s = 13.3 based on earlier studies? Suppose the doctor
would be content with 95% confidence. How does the decrease in confidence affect the sample size required?
Click the icon to view a partial table of critical values
A 99% confidence level requires subjects. (Round up to the nearest subject)
A 95% confidence level requires subjects (Round up lo the nearest subject)
How does the decrease in confidence affect the sample size required?
O A. The sample size is the same for all levels of confidence.
OB. Decreasing the confidence level decreases the sample size needed.
OC. Decreasing the confidence level increases the sample size needed.
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