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The claim is a mean is 155 and you want to prove it is more. Test the hypothesis within a 10% level of significance. Your

The claim is a mean is 155 and you want to prove it is more. Test the hypothesis within a 10% level of significance.

Your sample of 112 had a mean of 158.1 and standard deviation of 17.05.

Please format to 2 decimal places.

Number of Tails:

Test Statistic:

Critical z in the Decision Rule:

Both + and

Reject or Not:

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