Solutions Statistics

Solution) The distribution of SAT scores is normal with a mean of µ=500 and a standard deviation ?=100. If the

Question: The distribution of SAT scores is normal with a mean of µ=500 and a standard deviation σ=100. If the mean SAT score is computed for the sample of n=100 students.

A. What range of values should contain the sample mean 90% of the time( That is , find the middle 90%of the distribution sample means)

B. What range of values should contain the sample mean 95% of the time?

C. What range of values should contain the sample mean 99% of the time?

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