During the Rose Bowl, the length (in seconds) of 12 randomly chosen commercial breaks during timeouts (following touchdown, turnover, field goal, or punt) were
65 | 75 | 85 | 95 | 80 | 100 | 90 | 80 | 85 | 85 | 60 | 65 |
(a) Assuming a normal population, construct a 90 percent confidence interval for the mean length of a commercial break during the Rose Bowl. (b) What are the limitations on your estimate? How could they be overcome?
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