Question: It has been found that the average time internet users spend online per week is 18.3 hours. A random sample of 48 teenagers indicated that

It has been found that the average time internet users spend online per week is 18.3 hours. A random sample of 48 teenagers indicated that their mean amount of internet time per week was 20.9 hours with a population variance of 32.49. At the 0.02 level of significance. can it be concluded that the mean time differs from 18.3 hours per week?

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