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Suppose samples of size 100 are drawn randomly from a population that has a mean of...

Suppose samples of size 100 are drawn randomly from a population that has a mean of 20 and a standard deviation of 5. What is the probability of observing a sample mean equal to or greater than 20.5?

0.1587

0.4192

0.9192

0.1634

0.8384

Math   Statistics-And-Probability   
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