Geometric Distributions - Practice quiz

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

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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

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. How many blood donors should the American Red Cross expect to collect from until it gets a donor with Type B blood? 

• 9.1 donors
• 8.5 donors
• 10.3 donors
• Cannot be determined.

Tags

CCSS.HSF.BF.A.2

The owner of a pet store is trying to decide whether to discontinue selling specialty clothes for pets. She suspects that only 4% of the customers buy specialty clothes for their pets. What is the probability that she does NOT sell a garment until the 7th customer? Assume each customer is independent.

• 0.033
• 0.027
• 0.0313
• Not here

Tags

CCSS.HSF.BF.A.2

We calculate the probability of rolling a 6 for the first time on the 6^th roll of a die using the binomial distribution? 

• True
• False

Tags

CCSS.HSS.MD.B.6

CCSS.HSS.MD.B.7

If the probability that a house in your neighborhood has a dog is 60%, what is the chance that you find a house with a dog before the fifth house?

• 0.97
• 0.99
• 0.02
• 0.04

Tags

CCSS.HSS.MD.B.6

CCSS.HSS.MD.B.7

The McDonald's Monopoly game has a 1 in 4 chance of winning.  What is the probability your first win is on your third attempt?

• .1406
• .0156
• .2500
• .0352

If Mobius draws 7 cards out of a deck with replacement, what is the probability that he gets the first heart in 6 attempts or fewer?

• 0.18
• 0.82
• 0.06
• 0.76

Tags

CCSS.HSF.BF.A.2

Peyton Manning completes 67% of his passes. What is the probability that it takes more than four throws to complete his first pass in a game?

• 0.99
• 0.01
• 0.04
• 0.96

Tags

CCSS.HSS.MD.B.6

CCSS.HSS.MD.B.7

Find the probability that LeBron James makes a three-point shot on or before his seventh attempt assuming he makes 31.5% of all three-pointers.

• 0.97
• 0.03
• 0.07
• 0.93

Tags

CCSS.HSF.BF.A.2