Binomial Probability Formula

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

• 50%
• 17.62%
• .58.81%
• 41.19%

Which of the following is NOT an assumption of the Binomial distribution?

• All trials must be independent.
• Each trial must be classified as a success or a failure.
• All trials are dependent on each other.
• The number of successes in the trials is counted.

When rolling a fair die 100 times, what is the probability of rolling a "4"exactly 25 times?

• 1.0%
• 16.7%
• 25%
• 2.1%

A quarterback has a passing percentage of 70%.  What is the probability that he does not complete 8 of his 20 passes?

• 11.44%
• 12.45%
• 54%
• 12.34%

A coin is tossed ten times.  What is the probability that there are exactly 6 heads?

• 20.51%
• 90%
• 45.68%
• 34.65%

Let n=20, (1-p) = .6,  Find the probability of 12 successes

• 3.55%
• 35.55%
• 24%
• 12.90%

What does the n stand for in the binomial probability formula?

• Number of trials
• Number of Successes
• Probability of Successes
• Probability of Failures

What does the r stand for in the binomial probability formula?

• Number of trials
• Number of Successes
• Probability of Successes
• Probability of Failures

What does the p stand for in the binomial probability formula?

• Number of trials
• Number of Successes
• Probability of Successes
• Probability of Failures

What does the (1-p) stand for in the binomial probability formula?

• Number of trials
• Number of Successes
• Probability of Successes
• Probability of Failures