A simple random sample of size n = 200 individuals who are currently employed is asked if they work at home at least once per week. Of the 200 employed individuals surveyed, 38 responded that they did work at home at least once per week. Construct a 99% confidence interval for the population proportion of employed individuals who work at home at least once per week. The lower bound is (Round to three decimal places as needed.)
A simple random sample of size n = 200 individuals who are currently employed is asked if they work at home at least once per week. Of the 200 employed individuals surveyed, 38 responded that they did work at home at least once per week. Construct a 99% confidence interval for the population proportion of employed individuals who work at home at least once per week. The lower bound is (Round to three decimal places as 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
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![A simple random sample of size n = 200 individuals who are currently employed is asked if they work at home at least
once per week. Of the 200 employed individuals surveyed, 38 responded that they did work at home at least once per
week. Construct a 99% confidence interval for the population proportion of employed individuals who work at home at
least once per week.
The lower bound is
(Round to three decimal places as needed.)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F419f968d-a13f-447b-b9f1-70dfcb71f1bc%2Feb3c3fa3-f6f0-4cee-8d33-f11b8e475b5a%2F1irxges_processed.png&w=3840&q=75)
Transcribed Image Text:A simple random sample of size n = 200 individuals who are currently employed is asked if they work at home at least
once per week. Of the 200 employed individuals surveyed, 38 responded that they did work at home at least once per
week. Construct a 99% confidence interval for the population proportion of employed individuals who work at home at
least once per week.
The lower bound is
(Round to three decimal places as needed.)
![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 = 14.8 based on earlier studies?
Suppose the doctor would be content with 90% 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.)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F419f968d-a13f-447b-b9f1-70dfcb71f1bc%2Feb3c3fa3-f6f0-4cee-8d33-f11b8e475b5a%2Fv6o79_processed.png&w=3840&q=75)
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 = 14.8 based on earlier studies?
Suppose the doctor would be content with 90% 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.)
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