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Solve the Problem. -Scores on a Test Are Normally Distributed with a Mean

Question 185

Multiple Choice

Solve the problem.
-Scores on a test are normally distributed with a mean of 68.2 and a standard deviation of 10.4. Estimate the probability that among 75 randomly selected students, at least 20 of them score greater than 78.


A) 0.0113
B) 0.0239
C) 0.1736
D) 0.0166

Correct Answer:

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