Question: This is about hypothesis test. Here is the scenario. Based on past studies. Scientists have found that the average words per minute (WPM) to be

This is about hypothesis test. Here is the scenario.

Based on past studies. Scientists have found that the average words per minute (WPM) to be 38 with a standard deviation of 15. Recently, a new researcher believed that the average WPM has increased. The researcher tested 100 people getting a new average of 40 WPM. Based on this information, what is the Z value and the P value? Is the WPM > 38?

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