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You may need to use the appropriate appendix table or technology to answer this question. A survey conducted by the American Automobile Association showed that
You may need to use the appropriate appendix table or technology to answer this question. A survey 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 $258.45 per day and a sample standard deviation of $72.50. (a) Develop a 95% condence interval estimate of the mean amount spent per day in dollars by a family of four visiting Niagara Falls. (Round your answers to the nearest cent.) $ l to s |
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