Suppose, for a sample selected from a normally distributed population, 68.50 and s = 8.9. a.
Question:
a. Construct a 95% confidence interval for µ assuming n = 16.
b. Construct a 90% confidence interval for µ assuming n = 16. Is the width of the 90% confidence interval smaller than the width of the 95% confidence interval calculated in part a? If yes, explain why.
c. Find a 95% confidence interval for µ assuming n = 25. Is the width of the 95% confidence interval for with n 25 smaller than the width of the 95% confidence interval for µ with n = 16 calculated in part a? If so, why? Explain.
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n 16 6850 s 89 s sn 8916 2225 and df n 1 16 1 15 a 2 5 952 025 and t 2131 The 95 confiden...View the full answer
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