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Scores on a standardized reading test for fourth-grade students form a normal distribution with m = 60 and s = 20. What is the probability
Scores on a standardized reading test for fourth-grade
students form a normal distribution with m = 60 and
s = 20. What is the probability of obtaining a sample
mean greater than M = 65 for each of the following?
a. A sample of n =16 students
b. A sample of n = 25 students
c. A sample of n =100 students
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