Question: The accompanying data table lists measured voltage amounts supplied directly to a family's home. The power supply company states that it has a target power

The accompanying data table lists measured voltage amounts supplied directly to a family's home. The power supply company states that it has a target power supply of

120 volts. Using those home voltage amounts, test the claim that the mean is 120 volts. Use a 0.01 significance level.

Calculate the test statistic.

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