A random sample of 58 college students shows that average weight is 139 lbs with a Standard deviation of 20 lb. Construct a 90 percent confidence interval for the mean weight of all college students. Does the result in part (a) means that 90% of students’ weight is in the range of your CI? If you want to be 99% confident instead, and you want to control the maximal error of estimation to be 2 lbs, how many more college students need to be collected?
A random sample of 58 college students shows that average weight is 139 lbs with a Standard deviation of 20 lb. Construct a 90 percent confidence interval for the mean weight of all college students. Does the result in part (a) means that 90% of students’ weight is in the range of your CI? If you want to be 99% confident instead, and you want to control the maximal error of estimation to be 2 lbs, how many more college students need to be collected?
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 random sample of 58 college students shows that average weight is 139 lbs with a Standard deviation of 20 lb.
- Construct a 90 percent confidence interval for the mean weight of all college students.
- Does the result in part (a) means that 90% of students’ weight is in the
range of your CI? - If you want to be 99% confident instead, and you want to control the maximal error of estimation to be 2 lbs, how many more college students need to be collected?
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