Binomial Probabilities

Front

If you were to flip a coin 20 times, what is the probability you would get exactly 10 heads?

Back

17.62%

Front

A quarterback has an incomplete passing percentage of 30%. What is the probability that he does not complete exactly 8 of his 20 passes?

Back

11.44%

Front

The probability of winning is 1/3. Bob plays 6 games. Find P(win exactly 5 games):

Back

.0164

Front

Find probability of getting exactly 5 out of 12 questions correct. Which of the following is used to find the probability?

Back

binompdf

Front

MC test with 4 choices per question find probability of getting at most 5 out of 10 questions correct. Which of the following would be used?

Back

binomcdf

Front

Find the probability of getting exactly 7 out of 10 questions correct in a MC test with 4 choices per question. Which of the following is the correct binomial? Options: binompdf (10, 0.25, 7), binompdf (10, 0.70, 4), 1−binomcdf(10, 0.70, 7), 1-binompdf(10, 0.25, 7)

Back

binompdf (10, 0.25, 7)

Front

A new bacteria has found its way to ECU and 85% of the Pirates are infected. If we select 100 Pirates, find the probability that less than 80 Pirates are infected. (Hint: Binomcdf, less than 80 means less than or equal to 79)

Back

0.0663

Front

An algebra 2 test has 6 multiple choice questions with four choices with one correct answer each. If we just randomly guess on each of the 6 questions, what is the probability that you get exactly 3 questions correct?

Back

13.2%

Front

What is the probability that Barry Bonds will get on base 6 times in 10 at bats, given his career batting average of .298?

Back

3.58%