# The sample with sample mean 990g is likely to provide

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The sample with sample mean 990g is likely to provide the least evidence to reject 0 H as the sample mean is not that far. The sample with sample mean 1030g providing the strongest evidence to reject H 0 has the smallest p -value. However the sample with sample mean 990g providing the least evidence to reject H 0 has the largest p -value. 0 H : = 1000 H 1 : > 1000 Important note: we calculate GREATER than sample mean value in this exercise because the alternative hypothesis is that the mean mass is more than 1000 g. Recall that the more extreme the value of the sample mean, that is the value being larger than 1000, the more evidence we have to support the alternative hypothesis. Note that in this case, the p -value is smallest for the sample that provides the strongest evidence to reject H 0 . Annex A GC Keystrokes for the Examples Example 8.2 : choose 1: Z-Test. Select and enter as shown. Select Calculate and press .

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