Binomial Geometric

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.MD.B.6

CCSS.HSS.MD.B.7

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%

Tags

CCSS.HSS.MD.B.6

CCSS.HSS.MD.B.7

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 the tenth blood donor is the first donor with Type B blood?

• approximately 0.00
• 0.316
• 0.0385 
• 0.279

Tags

CCSS.HSF.BF.A.2

If you want a certain number of successes in a set amount of trials, use the ???? method.

• Geometric

• Binomial

• Normal

• Poisson

If you want to know how many trials you will need before your first success, use the ???? model.

• Geometric

• Binomial

• Normal

• Poisson

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

• 0.00983

• 0.167

• 0.25

• 0.0000756

Tags

CCSS.HSS.MD.B.6

CCSS.HSS.MD.B.7

The local Chipotle is running a promotion where each large drink cup has a large pull-off tab that reveals a prize or the message "Try again next time."  Chipotle claims that 25% of the cups have tabs with a  prize.  You visit Chipotle to try to win.  What is the probability that you win on your third visit?

• 0.859

• 0.141

• 0.420

• 0.580

Tags

CCSS.HSF.BF.A.2

Which of the following is false about binomial probabilities?

• Their distributions are approximately symmetric.
• Trials must be fixed.
• Events musts be independent.
• The probability of success must be 0.50

Alma wrote a phone app. She has noticed that 3% of the users who download her app upgrade it the same day. Let N be the number of customers who download Alma's app until one upgrades it on the same day. Assume that the probability of each user's upgrades are independent.

What type of variable is N?

• Geometric

• Binomial

• Both

• Neither

Leo selects 25 grandparents at random from his town to interview. In the town, 35% of the grandparents have their grandchildren living with them. Let G be the number of grandparents Leo interviews whose grandchildren are living with them.

What type of variable is G?

• Geometric

• Binomial

• Both

• Neither