The average number of pushups a us marine does daily is μ = 300, with a standard deviation of σ = 50. A random sample of n = 36 marines is selected. What is the probability that the sample mean is at most 320 push-ups (given: qnorm(0. 9918)= 2. 4, qnorm(0. 8767) = 1. 60, qnorm(0. 3446) = -0. 4, qnorm(0. 0082) = -2. 4).
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The average number of pushups a us marine does daily is μ = 300, with a standard deviation of σ = 50...
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