Stats and Prob Benchmark review 2

What is the probability that someone plays basketball?

• .50

• .68

• .52

• .46

Tags

CCSS.HSS.CP.A.1

Ms. Stringer conducted a survey of his 9th grader homeroom.  17 students are taking both Econ and Business.  19 students are taking Econ.  18 students are taking Business.  16 students are taking other courses.

• A

• B

• C

• D

Tags

CCSS.HSS.CP.A.1

Ms. Stringer conducted a survey of his 9th grader homeroom.  17 students are taking both Econ and Business.  19 students are taking Econ.  18 students are only taking Business.  16 students are taking other courses.

• A

• B

• C

• D

Tags

CCSS.HSS.CP.A.1

What is the probability that a randomly selected student plays sports given that they do not do community service?

Tags

CCSS.HSS.CP.A.4

What percent of the students take sign language?

• 20.4%

• 30.4 %

• 40.4%

• 63.4%

A box contains an assortment of tool items on clearance. You randomly choose a sale item, look at it, and then put it back in the box. Then you randomly choose another sale item.

Event A: You choose a hammer first.

Event B: You choose a pair of pliers second

Are these independent or dependent events?

• Independent

• Dependent

Tags

CCSS.HSS.CP.A.5

A cooler contains an assortment of juice boxes. You randomly choose a juice box and drink it. Then you randomly choose another juice box.

Event A: You choose an orange juice box first.

Event B: You choose a grape juice box second

Are these independent or dependent events?

• Independent

• Dependent

Tags

CCSS.HSS.CP.A.5

A sack contains the 26 letters of the alphabet, each printed on a separate wooden tile. You randomly draw one letter, REPLACE IT, and then you randomly draw a second letter.

Find the probability that the first letter drawn is T and the second letter drawn is A.

A sack contains the 26 letters of the alphabet, each printed on a separate wooden tile. You randomly draw one letter, you DO NOT replace it, and then you randomly draw a second letter.

Find the probability that the first letter drawn is P and the second letter drawn is S.

Given the following probabilities, are events A and B independent?

P(A) = 0.2

P(B) = 0.7

P(A and B) = 0.21

If so, what must P(A and B) be for the events to be independent?

• Yes; N/A

• No; 0.9

• No; 0.5

• No; 0.14

Tags

CCSS.HSS.CP.A.4

CCSS.HSS.CP.A.2