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probability that IRS abuses its power

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According to CNN/USA Today poll approximately 70% of Americans believe the IRS abuses its power. Let X equal the number of people who believe the IRS abuses its power in a sample of n=25 Americans. Assuming that the poll results are still valid , find the probability that:

a) X is at least 13
b) X is at most 11
c) x is equal to 12
d) give the mean, variance, and standard deviation of X.

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Solution Summary

The solution shows step-by-step how to calculate the probability that IRS could have abused its power based on the poll data, which follows a binomial distribution.

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