A survey is conducted by the American Automobile Association to investigate the daily expense of a family of four while on vacation. Suppose that a sample of 64 families of four vacationing at Niagara Falls resulted in sample mean of $252.45 per day and a sample standard deviation of $74.50.
A) Develop a 95% confidence interval estimate of the mean amount spent per day by a family of four visiting Niagara Falls.
[236.91, 267.99]
[223.83, 271.07]
[234.2, 270.7]
[233.84, 271.06]