Question: 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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