In an exam taken by millions of students, the average of 16 students is 70 with...

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In an exam taken by millions of students, the average of 16 students is 70 with a standard deviation 8. Assume that the scores are normally distributed. Use a 0.01 level of significance to test the hypothesis that the population average u is at most 65. (So the alternative hypothesis is > 65.) [CAUTION: Population Standard Deviation is not given.] In an exam taken by millions of students, the average of 16 students is 70 with a standard deviation 8. Assume that the scores are normally distributed. Use a 0.01 level of significance to test the hypothesis that the population average u is at most 65. (So the alternative hypothesis is > 65.) [CAUTION: Population Standard Deviation is not given.]