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homework help 2879

homework help 2879.

A study is performed in a large southern town to determine whether the average weekly grocery bill per 4-person family is significantly different from the national average. A random sample of the weekly grocery bills of four-person families in this town is given in the file attached.(a) Assume that the national average weekly grocery bill for a four-person family is $100. Is the sample evidence statistically significant?If so, at what significance levels can you reject the null hypothesis?(b) For which values of the sample mean would you decide to reject thenull hypothesis at the 0.01 significance level? For which values of the sample mean wold you decide to reject the null hypothesis atthe 0.10 significance level?

homework help 2879


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