18. The population of SAT scores forms a normal distribution with a mean of 500 and...
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18. The population of SAT scores forms a normal distribution with a mean of 500 and a standard deviation of 100. If the average SAT score is calculated for a sample of n 25 students,
a. What is the probability that the sample mean will be greater than M 510? In symbols, what is p(M 510)?
b. What is the probability that the sample mean will be greater than M 520? In symbols, what is p(M 520)?
c. What is the probability that the sample mean will be between M 510 and M 520? In symbols, what is p(510 M
520)?
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Related Book For
Essentials Of Statistics For The Behavioral Sciences
ISBN: 9780495812203
7th Edition
Authors: Frederick J. Gravetter, Larry B. Wallnau
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