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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Essentials Of Statistics For The Behavioral Sciences

ISBN: 9780495812203

7th Edition

Authors: Frederick J. Gravetter, Larry B. Wallnau

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