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The mean waiting time to check out in a multi-store supermarket is 9.3 minutes. A sample of 24 customers in one of its busy stores showed that the mean checkout time was 10.1 minutes with a standard deviation of 2.5 minutes. Test a claim that the busy stores checkout time was no different than the overall companys stores checkout time using a 0.01 level of significance. Claim: Busy Store mean 9.3 (using a 01 level of significance))
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