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The National Football League (NFL) polls fans to develop a
rating for each football...
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The National Football League (NFL) polls fans to develop arating for each football game. Each game is rated on a scale from 0(forgettable) to 100 (memorable). The fan ratings for a randomsample of 12 games follow.
57
61
85
74
72
72
20
58
79
78
84
74
a. Develop a point estimate of mean fan ratingfor the population of NFL games (to 2 decimals).
b. Develop a point estimate of the standarddeviation for the population of NFL games (to 4 decimals)
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Solution We know that the sample mean Xbar is a point estimate of the population mean and sample standard deviation S is a point estimate of the population standard deviation
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