from past studies the average time college freshmen spend studying n 22 hours per week. The...

from past studies the average time college freshmen spend studying n 22 hours per week. The standard deviation is 4 hours. This year, 60 students were surveyed, and the average time that they spent studying was 20.8 hours. Test the claim that the time students spend studying has not changed. Use a=1%

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Expert Solution

Here, we conduct Z-test for one population mean as :

Hence, we conclude that the time students spend studying has not changed at 1% level of significance.

orchestra answered 1 year ago

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