Suppose a poll taken a few years ago found 75% of parents spank their children. Now suppose a random sample of 20 parents is obtained and the number of parents who spank their children is recorded.  Find the probability that 8 of the 20 parents spank their children.  Round to five decimal places. Find the probability of 10 or fewer parents in this sample spank their children. Round to 5 decimal places. What are all the possible value of x for this binomial experiment?

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Counting And Probability
Section9.3: Binomial Probability
Problem 2E: If a binomial experiment has probability p success, then the probability of failure is...
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Suppose a poll taken a few years ago found 75% of parents spank their children. Now suppose a random sample of 20 parents is obtained and the number of parents who spank their children is recorded. 

Find the probability that 8 of the 20 parents spank their children.  Round to five decimal places.

Find the probability of 10 or fewer parents in this sample spank their children. Round to 5 decimal places.

What are all the possible value of x for this binomial experiment? 

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