Mean shopping time at local super-market

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Reference no: EM13136133

An article (N. Hellmich. "'Supermarket Guru' Has a Simple Mantra," USA Today, June 19, 2002, p. 70) claimed that the typical super market trip takes a mean of 22 minutes. Suppose that in an effort to test this claim, you select a sample of 50 shoppers at a local supermarket. The mean shopping time for the sample of 50 shoppers is 25.36 minutes with a standard deviation of 7.24 minutes. Using the 0.10 level of significance, is there evidence that the mean shopping time at the local supermarket is different from the claimed value of 22 minutes.

Reference no: EM13136133

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