4. A simple random sample of size 35 has a sample mean of 34.85 and a sample standard deviation of 17.9. a) Construct a 98% confidence interval for the population mean. Show all steps in your method. b) If the confidence level was 95%, would the confidence interval be narrower or wider. Explain why.
4. A simple random sample of size 35 has a sample mean of 34.85 and a sample standard deviation of 17.9. a) Construct a 98% confidence interval for the population mean. Show all steps in your method. b) If the confidence level was 95%, would the confidence interval be narrower or wider. Explain why.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
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![4. A simple random sample of size 35 has a sample mean of 34.85 and a sample
standard deviation of 17.9.
a) Construct a 98% confidence interval for the population mean. Show all
steps in your method.
b) If the confidence level was 95%, would the confidence interval be
narrower or wider. Explain why.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5b9cab35-a5ce-4589-9f2a-15e99eeb2fef%2Fd72363ef-cd76-408d-b28d-f013ff64e37a%2F3p9n96b_processed.jpeg&w=3840&q=75)
Transcribed Image Text:4. A simple random sample of size 35 has a sample mean of 34.85 and a sample
standard deviation of 17.9.
a) Construct a 98% confidence interval for the population mean. Show all
steps in your method.
b) If the confidence level was 95%, would the confidence interval be
narrower or wider. Explain why.
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