# Question: A group of 10 000 people are tested

A group of 10,000 people are tested for a gene called Ifi202 that has been found to increase the risk for lupus. The random variable is the number of people who carry the gene.

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Use the probability mass function in Exercise 3-11 to determine the following probabilities: (a) P (X < 2) (b) P (0.5 < X < 2.7) (c) P (X > 3) (d) P (0 < X < 2) (e) P (X = 0 or X = 2) Verify that the following ...In a semiconductor manufacturing process, three wafers from a lot are tested. Each wafer is classified as pass or fail. Assume that the probability that a wafer passes the test is 0.8 and that wafers are independent. ...Determine the cumulative distribution function for the random variable in Exercise 3-19.Determine the mean and variance of the random variable in Exercise 3-15.Let the random variable X be equally likely to assume any of the values 1/8, 1/4, or 3/8. Determine the mean and variance of X.Post your question