Question: Question 7 correct Question 7 0 / 1 pts Let x be a random variable that represents white blood cell count per cubic milliliter of

Question 7

correct Question 7 0 / 1 pts Let x be a random variable that represents white blood cell count per cubic milliliter of whole blood. Assume that x has a distribution that is approximately normal, with mean u - 7350 and estimated standard deviation o = 2950. Suppose a doctor uses the average x for four tests taken about a week apart and the probability distribution of x is approximately normal. What is the probability that white blood cell count is less than 5900? Find the z value. P(x bar

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