# A survey conducted by the American Automobile Association showed that a family of four spends an averageof \$215.60 per day while on vacation. Suppose a sample of 64 families of four vacationing at Niagara Fallsresulted in a sample mean of \$252.45 per day and a sample standard deviation of \$73.50.a. Develop a 95% confidence interval estimate of the mean amount spent per day by a family of four visitingNiagara Falls (to 2 decimals)b. Based on the confidence interval from part (a), does it appear that the population mean amount spent perday by families visiting Niagara Falls differs from the mean reported by the American Automobile Association?Select

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Step 1

a,

Calculation of confidence interval:

Here, the sample mean, x-bar is \$252.45.

Population mean, µ is 215.60.

Population standard deviation, s = \$73.50.

Sample size, n is 64.

The 95% confidenc...

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