5.1-5.2 Probability Rules Review

In an AP Statistics class, 57% of students eat breakfast in the morning, 80% of them floss their teeth, and 46% of the students do both.  What is the probability that a randomly chosen student eats breakfast but does not floss their teeth?

• 9%
• 11%
• 34%
• 91%

Tags

CCSS.HSS.CP.A.1

CCSS.HSS.CP.A.3

CCSS.HSS.CP.B.6

In an AP Statistics class, 57% of students eat breakfast in the morning, 80% of them floss their teeth, and 46% of the students do both.  What is the probability that a randomly chosen student eats breakfast or flosses their teeth?

• 91%
• 9%
• 11%
• 34%

Tags

CCSS.HSS.CP.B.7

A fair coin has come up "heads" 10 times in a row.  The probability that the coin will come up heads on the next flip is:

• greater than 50%, it's due to happen.
• 50%
• less than 50%, since tails is happening so much.
• Can't be determined

Tags

CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.3

According to the National Telecommunication and Information Administration, 50.5% of U.S. households had internet access in 2001.  What is the probability that four randomly selected U.S. all had internet access in 2001?

• 6.5%
• 12.6%
• 49.5%
• 50.5%

Tags

CCSS.HSS.CP.B.8

Pepsi is running a sales promotion in which 12% of all bottles have a "FREE" logo under the cap. If you buy a 6-pack of bottles, what is the probability that you will find at least 1 "FREE" logo?

• 0.464

• 0.536

• 0.12

• 0

Tags

CCSS.HSS.CP.B.7

CCSS.HSS.CP.B.9

An ice cream stand owner reports that 12% of the cones they sell are "JUMBO" size. You want to see what a "JUMBO" cone looks like so you stand and watch the sales for a while. What is the probability that the first "JUMBO" cone isn't until the fourth cone you see them sell?

• 8%

• 33%

• 40%

• 60%

Tags

CCSS.HSS.CP.A.2

The probability of a tourist visiting an area cave is 0.7, and of a tourist visiting a nearby park is 0.6. The probability of visiting both places on the same day is 0.4. The probability that a tourist visits at least one of these two places is:

• 0.08

• 0.28

• 0.42

• 0.9

Tags

CCSS.HSS.CP.B.7

100 people were surveyed.  54 were female, and 46 were male.  33 of the females said they were democrats, and 30 of the males said they were republicans.  If a person is randomly selected, what is the probability that its a democrat?

• 49%
• 46%
• 54%
• 51%

Tags

CCSS.HSS.CP.A.1

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4