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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.

          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.

Added by Francisco Jose G.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Adi S

05/10/2023

Step 1

Sample size (n) = 35 Sample mean (x̄) = 34.85 Sample standard deviation (s) = 17.9 Confidence level = 98% Show more…

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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.