In a recent SAT, the mean score for all examinees was 1020. Assume that the distribution of SAT scores of all examinees is normal with a mean of 1020 and a standard deviation of 153. Let x be the mean SAT score of a random sample of certain examinees. Calculate the mean and stan- dard deviation of x and describe the shape of its sampling distribution when the sample size is (a) 16 (b) 50

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In a recent SAT, the mean score for all examinees was 1020. Assume that the distribution of SAT
scores of all examinees is normal with a mean of 1020 and a standard deviation of 153. Let x
be the mean SAT score of a random sample of certain examinees. Calculate the mean and stan-
dard deviation of x and describe the shape of its sampling distribution when the sample size is
(a) 16
(b) 50
Transcribed Image Text:In a recent SAT, the mean score for all examinees was 1020. Assume that the distribution of SAT scores of all examinees is normal with a mean of 1020 and a standard deviation of 153. Let x be the mean SAT score of a random sample of certain examinees. Calculate the mean and stan- dard deviation of x and describe the shape of its sampling distribution when the sample size is (a) 16 (b) 50
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