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How much money does the average professional football fan spend on food at a single football...

  1. How much money does the average professional football fan spend on food at a single football game? That question was posed to 45 randomly selected football fans. The sample mean is $18.00, and the population variance is $10.00, respectively. Find and interpret a 99% confidence interval for the population mean, μ.
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Answer #1

Mean = 18.00

Sample size (n) = 45

Standard deviation (s) = 3.16

Confidence interval(in %) = 99

z @ 99% = 2.576

Since we know that

Required confidence interval = (18.0-1.2135, 18.0+1.2135)

Required confidence interval = (16.7865, 19.2135)

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