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In the population of children in grade 5 in the United States, 2 5 % score below 5 . 0 on a math test. Marjorie

In the population of children in grade 5 in the United States, 25% score below 5.0 on a math test. Marjorie obtains a random sample of 102 grade 5 children.
What is the probability that the mean of this sample will be less than 5.0?

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