Question

The manager at Air Express believes that the weights of packages shipped recently are less than those in the past. Records show that in the past, packages have had a mean weight of 36.5 lb and a standard deviation of 14.2 l
b. A random sample of last month’s shipping records yielded the following 64 data values:
Is this sufficient evidence to reject the null hypothesis in favor of the manager’s claim? Use a _ 0.01.


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  • CreatedAugust 28, 2015
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