Binomial Probability

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

• 3.58%
• 5.46%
• 22.67%
• 100%

Tags

CCSS.HSS.CP.B.9

A Stats  test has 5 multiple choice questions with four choices with one correct answer each. If we just randomly guess on each of the 5 questions, what is the probability that you get exactly 2 questions correct?

• 0.6250
• 0.25
• 0.0625
• 0.2636

Tags

CCSS.HSS.CP.B.9

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

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

The probability that Tim will sink a foul shot is 70%. If Tim attempts 30 foul shots, what is the probability he sinks exactly 21 foul shots?

• ~15.7%

• ~68.1%

• 70%

• ~72.4%

Tags

CCSS.HSS.MD.B.6

CCSS.HSS.MD.B.7

Find the mean of the probability distribution.

• 85
• 83.2
• 87.1
• 84.4

Tags

CCSS.HSS.MD.A.2

CCSS.HSS.MD.A.3

A company states that 2% of its computers are returned for defects.  We take a sample of 100 computers to find the probability of 10 being defective.  Is this a binomial distribution?

• No because there is not a fixed number of trials.
• No because their are more than 2 outcomes.
• Yes since there are a fixed number of independent trials, outcomes in 2 categories, and the probability of defect is constant.
• No since computers would not be independent.

Tags

CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.3

A survey found that 25% of pet owners had their pets bathed professionally rather than do it themselves. If 18 pet owners are randomly selected, find the probability that exactly 5 people have their pets bathed professionally

• 3.42
• 1.03
• 0.072
• 0.199

Find the standard deviation of the probability distribution shown in the image.

• 11.61
• 1.30
• 1.14
• 12

Is this a probability distribution?

• No
• Yes

Tags

CCSS.HSS.MD.A.2

CCSS.HSS.MD.A.3

CCSS.HSS.MD.A.1

The American Red Cross says that about 11% of the U.S. population has Type B blood. A blood drive is being held at your school.What is the probability that exactly 2 of the first 20 blood donors have Type B blood? 

• 0.316
• 0.282
• 0.001
• Not here

Tags

CCSS.HSS.CP.B.9