lease help me. Don't switch to Statistics or Probability for some reason it bugged and I don't see the answer the tutor gives. so please don't change the subject

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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Please help me. Don't switch to Statistics or Probability for some reason it bugged and I don't see the answer the tutor gives. so please don't change the subject

The sample data below have been bollected based on a simple random sample from a normally distributed population. Complete parts a and b.
3
2
9
1
a. Compute a 90% confidence interval estimate for the population mean.
The 90% confidence interval for the population mean is from
to
(Round to two decimal places as needed. Use ascending order.)
b. Show what the impact would be if the confidence level is increased to 99%. Discuss why this occurs. Select the correct choice below and fill in the answer boxes to complete your choice.
(Round to two decimal places as needed. Use ascending order.)
O A. The 99% confidence interval is from
to
which is narrower than the interval in part a. This is because the margin of error is greater for a higher confidence level.
O B. The 99% confidence interval is from
to
which is wider than the interval in part a. This is because the margin of error is greater for a smaller confidence level.
O C. The 99% confidence interval is from
to
,which is wider than the interval in part a. This is because the margin of error is greater for a higher confidence level.
O D. The 99% confidence interval is from
to
which is narrower than the interval in part a. This is because the margin of error is greater for a smaller confidence level.
Transcribed Image Text:The sample data below have been bollected based on a simple random sample from a normally distributed population. Complete parts a and b. 3 2 9 1 a. Compute a 90% confidence interval estimate for the population mean. The 90% confidence interval for the population mean is from to (Round to two decimal places as needed. Use ascending order.) b. Show what the impact would be if the confidence level is increased to 99%. Discuss why this occurs. Select the correct choice below and fill in the answer boxes to complete your choice. (Round to two decimal places as needed. Use ascending order.) O A. The 99% confidence interval is from to which is narrower than the interval in part a. This is because the margin of error is greater for a higher confidence level. O B. The 99% confidence interval is from to which is wider than the interval in part a. This is because the margin of error is greater for a smaller confidence level. O C. The 99% confidence interval is from to ,which is wider than the interval in part a. This is because the margin of error is greater for a higher confidence level. O D. The 99% confidence interval is from to which is narrower than the interval in part a. This is because the margin of error is greater for a smaller confidence level.
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