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Mathematics, 26.07.2019 14:30 saraderrico
Asurvey conducted by the american automobile association showed that a family of four spends an average of $215.60 per day while on vacation. suppose a sample of 64 families of four vacationing at niagara falls resulted in a sample mean of $252.45 per day and a sample standard deviation of $70.50. a. develop a 95% confidence interval estimate of the mean amount spent per day by a family of four visiting niagara falls (to 2 decimals).
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