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Q4 (20 points) A sample of five measurements, randomly selected from a normally distributed population, resulted in the following summary statistics: x- bar = 4.8, s = 1.3. a. Test the null hypothesis that the mean of the population is 6 against the alternative hypothesis that the mean of the population is smaller than 6. Report the p-value and use alpha = .05. b. Test the null hypothesis that the mean of the population is 6 against the alternative hypothesis that the mean of the population is different from 6. Report the p-value and use alpha = .05