Question 1181548: The sample data below have been collected based on a simple random sample from a normally distributed population.
Complete parts a and b.
2 6 0 9 6 2 9 1 5 2
a. Compute a 98% confidence interval estimate for the population mean.
The 98% 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.
99
(Round to two decimal places as needed. Use ascending order.)
A. 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.
99
B. 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.
99
C. 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.
99
D. 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.
Answer by ikleyn(52900)   (Show Source):
You can put this solution on YOUR website! .
If you request answer parts (a) and (b) ONLY, may I ask you,
FOR WHAT REASON parts (c) and (d) are included to this post, too ?
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