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Mathematics, 15.04.2020 00:56 alannadiaz1
Suppose that the weights of airline passenger bags are normally distributed with a mean of 48.01 pounds and a standard deviation of 3.6 pounds.
a. What is the probability that the weight of a bag will be greater than the maximum allowable weight of 50 pounds?
b. Let X represent the weight of a randomly selected bag. For what value of c is P(E(X) - c < X < E(X) + c)=0.91? Give your answer to four decimal places.
c. Assume the weights of individual bags are independent. What is the expected number of bags out of a sample of 11 that weigh greater than 50 lbs? Give your answer to four decimal places.
d. Assuming the weights of individual bags are independent, what is the probability that 4 or fewer bags weigh greater than 50 pounds in a sample of size 11? Give your answer to four decimal places.
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