The 11th Edition of The Pro Football Encyclopedia gave the following information. A random sample of pro football player ages in years:
24, 24, 25, 25, 25, 25, 26, 26, 26, 26, 27, 27, 27, 28, 28, 28, 28, 28, 28, 28, 29, 29, 29, 29, 30, 30, 31, 31, 31, 32, 32, 32, 32, 32, 33, 34, 34, 35, 36, 40
A) Calculate the mean and standard deviation of this sample. (Round
�¯=29.25Correct
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B) Based on the given sample, construct a 83 % confidence
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C.I. : �¯±
C) Based on the given sample, construct a 89 % confidence interval to estimate the population mean age (�) of pro football players. Hint: DO NOT use the T-table, use the invt( ) program available in your calculator to calculate the t-value. (Round �� to 3 decimal places and margin of error to 2 decimal places).
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