7.43 NBC News reported that 1 in 20 children in the U.S. has a food allergy (May...

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7.43 NBC News reported that 1 in 20 children in the U.S. has a food allergy (May 2, 2013). Consider selecting 10 children at random. Define the random variable x as x 5 number of children in the sample of 10 that have a food allergy Find the following probabilities. (Hint: See Examples 7.19 and 7.20.)

a. p(x , 3)

b. p(x # 3)

c. p(x $ 4)

d. p(1# x # 3)

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