Question

In: Statistics and Probability

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

How much money does the average professional football fan spend on food at a single football game? That question was posed to 10 randomly selected football fans. The sample results provided a sample mean and standard deviation of $14.00 and $2.50, respectively. Use this information to construct a 90% confidence interval for the mean.?

Solutions

Expert Solution

n = 10

= 14

s = 2.5

SE = s/

= 2.5/ = 0.7906

= 0.10

ndf = 10 - 1 = 9

From Table, critical values of t = 1.8331

Confidence interval:

t SE

= 14 (1.8331 X 0.7906)

= 14 1.4492

= (12.5508 , 15.4492)


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