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 4 points with 99% confidence assuming s = 19,6 b tudies? Suppose the doctor would be content with 95% confidence. How does the decrease in confidence affect the sample size required? B Click the icon to view a partial table of critical values A 99% confidence level requires subjects. (Round up to the nearest subject.) A Partial Critical Value Table A 95% confidence level requires subjects. (Round up to the nearest subject.) How does the decrease in confidence affect the sample size required? Critical Value, Za/2 Level of Confidence, (1-a) • 100% Area in Each Tail, O A. Decreasing the confidence level increases the sample size needed. 90% 95% 99% 0.05 0.025 0.005 1.645 1.96 2.575 O B. Decreasing the confidence level decreases the sample size needed. O C. The sample size is the same for all levels of confidence Print Done Click to select your answer(S).
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 4 points with 99% confidence assuming s = 19,6 b tudies? Suppose the doctor would be content with 95% confidence. How does the decrease in confidence affect the sample size required? B Click the icon to view a partial table of critical values A 99% confidence level requires subjects. (Round up to the nearest subject.) A Partial Critical Value Table A 95% confidence level requires subjects. (Round up to the nearest subject.) How does the decrease in confidence affect the sample size required? Critical Value, Za/2 Level of Confidence, (1-a) • 100% Area in Each Tail, O A. Decreasing the confidence level increases the sample size needed. 90% 95% 99% 0.05 0.025 0.005 1.645 1.96 2.575 O B. Decreasing the confidence level decreases the sample size needed. O C. The sample size is the same for all levels of confidence Print Done Click to select your answer(S).
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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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 4 points with 99% confidence assuming s = 19.6 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.)
1 Partial Critical Value Table
A 95% confidence level requires
subjects. (Round up to the nearest subject.)
How does the decrease in confidence affect the sample size required?
Level of Confidence,
(1-a) • 100%
Critical Value, Za/2
Area in Each Tail,
O A. Decreasing the confidence level increases the sample size needed.
2
0.05
0.025
0.005
1.645
1.96
90%
O B. Decreasing the confidence level decreases the sample size needed.
95%
99%
O C. The sample size is the same for all levels of confidence.
2.575
Print
Done
Click to select your answer(s).
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Transcribed Image Text:Question Help ▼
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 4 points with 99% confidence assuming s = 19.6 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.)
1 Partial Critical Value Table
A 95% confidence level requires
subjects. (Round up to the nearest subject.)
How does the decrease in confidence affect the sample size required?
Level of Confidence,
(1-a) • 100%
Critical Value, Za/2
Area in Each Tail,
O A. Decreasing the confidence level increases the sample size needed.
2
0.05
0.025
0.005
1.645
1.96
90%
O B. Decreasing the confidence level decreases the sample size needed.
95%
99%
O C. The sample size is the same for all levels of confidence.
2.575
Print
Done
Click to select your answer(s).
10:10 AM
P Type here to search
5/6/2021
hp
f5
f6
18
1A4
insert
prt sc
delete
f3
esc
%23
&
backspace
hom
3
6
7
T
U
D F
G
00
5
%24
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