The accompanying data table lists measured voltage amounts s

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 0.05 significance level.

A. Upper H 0: Mu equals120 Upper H 1: Mu not equals120

B. Upper H 0: Mu not equals120 Upper H 1: Mu greater than120

C. Upper H 0: Mu not equals120 Upper H 1: Mu equals120

D. Upper H 0: Mu equals120 Upper H 1: Mu greater than120

Solution

The claim is that the mean is 120 volts.

Thus, the alternative hypothesis is the opposit, u=/=120 V.

Thus,

OPTION A: Ho: u = 120 ; Ha: u=/= 120. [ANSWER A]

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Hi! To test this hypothesis, please resubmit this question together with the table stated in the problem. Thanks!