1. did we underestimate the age of the gentlemen? please use the data in the spreadsheet...

1. did we underestimate the age of the gentlemen? please use the data in the spreadsheet to address this question. Use alpha = 0.01. the true age of the gentlemen is 66 years old.

65, 63, 62, 62, 67, 60, 63, 65, 65, 63, 64, 62, 55, 65, 67, 74, 71, 62, 54, 68, 65, 52, 59, 67, 75, 64, 62, 65, 56, 50, 68, 63, 62, 50, 78, 65, 62, 62, 70, 51, 65, 64, 64, 58, 72, 67, 66, 62, 67, 49, 62, 65, 53, 72, 66, 62

A. State the Null and Alternative hypothesis (hint: should you use a one-tailed or two-tailed test here?

B. Find the critical t-values

C. Compute the t-statistic

D. make a conclusion

E. compute cohen's d.

F. compute r²

G. compute the confidence interval using alpha = 0.01

Solutions

Expert Solution

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orchestra answered 1 year ago

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