(Answered) The sampling distribution of a statistic is normally

Statistics

The sampling distribution of a statistic is normally distributed with an estimated standard error of 12 (df = 20).

(a) What is the probability that you would have gotten a mean of 107 (or more extreme) if the population parameter were 100? Is this probability signi?cant at the .05 level (two-tailed)?

(b) What is the probability that you would have gotten a mean of 95 or less (one-tailed)? Is this probability signi?cant at the .05 level? You may want to use the t Distribution calculator for this problem

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