AP STAT Probability Review

The probability that a randomly chosen American is a Republican is 0.35. What is the probability that in a sample of 10 Americans, that at least 1 will be a Republican? 

• a) 0.9865
• b) 0.2275
• c) 0.0725
• d) 0.0135

P(Freshman or Pizza):

• 27/50
• 4/50
• 3/50
• 30/50

Tags

CCSS.HSS.CP.B.7

P(Pizza ∩ Water) =

• 62/182
• 120/400
• 58/400
• 140/400

P(Sandals|Pants):

• 4/20
• 6/15
• 1/2
• 2/7

Tags

CCSS.HSS.CP.A.4

If I toss a fair coin five times and the outcomes are TTTTT, then the probability that tails appears on the next toss is 

• 0.5. 
• less than 0.5. 
• greater than 0.5. 
• 0.

Tags

CCSS.HSS.CP.A.5

What is P(not sport | Foreign language)?

• 23/37
• 14/23
• 14/37
• 3/23

Tags

CCSS.HSS.CP.B.6

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.HSF-LE.A.1C

Bob is taking a 100 question test.  They have a 90 % probability of getting any one question correct.  WHICH IS THE CORRECT FORMULA TO FIND OUT THE PROBABILITY that they will answer EXACTLY 70  questions correctly?

• ₁₀₀C₇₀   ( 0.18  )³⁰ ( 0.90  )⁷⁰
  
• ₁₀₀C₇₀   ( 0.10  )³⁰ ( 0.90  )⁶⁰
• ₁₀₀C₇₀   ( 0.10  )³⁰ ( 0.90  )⁷⁰
• ₉₉C₇₀   ( 0.10  )³⁰ ( 0.90  )⁷⁰

A test has 8 multiple choice questions with four choices with one correct answer each. If we just randomly guess on each of the 8 questions, what is the probability that you get at least 3 questions correct?

• 0.886

• 0.332

• 0.678

• 0.208

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