The College Board reported the following mean scores for the three parts of the ScholasticAptitude Test (SAT) (the World almanac, 2009):Critical Reading 502Mathematics 515Writing 494Assume that the population standard deviation on each part of the test is s = 100.a. What is the probability a sample of 90 test takers will provide a sample mean test scorewithin 10 points of the population mean of 502 on the Critical Reading part of the test?
The College Board reported the following mean scores for the three parts of the Scholastic
Aptitude Test (SAT) (the World almanac, 2009):
Critical Reading 502
Mathematics 515
Writing 494
Assume that the population standard deviation on each part of the test is s = 100.
a. What is the probability a sample of 90 test takers will provide a sample mean test score
within 10 points of the population mean of 502 on the Critical Reading part of the test?
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B. What is the probability a sample of 90 test takers will provide a sample mean test score within 10 points of the population mean of 515 on the mathematics part of the test.
c. What is the probiotic a sample of 100 test takers will provide a sample mean test score within 10 points of the population mean of 494 on the writing part of the test.
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