Hypothesis testing of mean-weight of penny

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Reference no: EM13110375

1. The US Mint selects ten pennies from the production line to test the hypothesis that the mean weight of each penny is 5 grams. The normally-distributed weights (in grams) of these pennies are as follows: 1, 5, 8, 4, 8, 4, 9, 2, 6, 8. Assume = 0.05.

· State the null and alternate hypotheses

· Calculate the sample mean and standard deviation

· Determine which test statistic is appropriate (z or t), and calculate its value.

· Determine the critical value(s).

· State your decision: Should the null hypothesis be rejected

Reference no: EM13110375

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