You are given the following information obtained from a random sample of 4 observations.
You want to determine whether or not the mean of the population from which this sample was taken is significantly different from 48.(Assume the population is normally distributed. )
a.State the null and the alternative hypotheses.
b.Determine the test statistic.
c.Determine the p-value;and at 95% confidence test to determine whether or not the mean of the population is significantly different from 48.
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