The College Board reported the following mean scores for the three parts of the SAT:

Assume that the population standard deviation on each part of the test is = 100.

Critical Reading: 502

Mathematics: 515

Writing: 494

For a random sample of 30 test takers, what is the sampling distribution of for scores on the Critical Reading part of the test?

For a random sample of 60 test takers, what is the sampling distribution of for scores on the Mathematics part of the test?

For a random sample of 90 test takers, what is the sampling distribution of for scores on the Writing part of the test?

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