Mathematics, 01.07.2019 20:40 tmrodriguez1

Amanufacturer of detergent claims that the contents of boxes sold weigh on average at least 16 ounces. the distribution of weight is known to be normal, with a standard deviation of 0.5 ounces. a random sample of 25 boxes yielded a sample mean weight of 15.43 ounces. test at the 1% significance level the null hypothesis that the population mean weight is at least 16 ounces.

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