Question: Is there a difference in the yields of different types of investments? The file CD Rate contains the yields for a one- year certificate of

Is there a difference in the yields of different types of investments? The file CD Rate contains the yields for a one- year certificate of deposit (CD) and a five- year CD for 22 banks in the United States as of March 12, 2014. (Data extracted from www.Bankrate.com, March 12, 2014.)

a. Construct a 95% confidence interval estimate for the mean yield of one- year CDs.

b. Construct a 95% confidence interval estimate for the mean yield of five- year CDs.

c. Compare the results of (a) and (b).

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PHStat output OneYear CD a Xbar t S n 071 20796 02990 22 058 084 b PHStat output Fi... View full answer

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