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A coin mint has a specification that a particular coin has a mean weight of

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6 0

<span>Null Hypothesis:µ equals 2.5Alternative Hypothesis: µ not equal to 2.5 Z Test Test Statistic, Ztest: -18.1912 Critical Zcritical: ±1.9607 P-Value: 0,0000 As Ztest is not within the limits of Zcritical we can reject the null hypothesis　 95% Confidence interval: 2.495746 < µ < 2.496574</span>

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