Unit 5 Retest

Mr. Tran conducted a survey of his 10th grader homeroom.

•4 students are taking both English and History.

•12 students are only taking English.

•18 students are taking History. (hint substracted from 4)

6 students are taking other courses. Determine "i"

• i = 4

• i = 6

• i = 12

• i = 14

• i = 36

Identify the shaded area...

• A

• B

• A'

• B'

What is the probability that a student does play a sport given they do not play an instrument? 

• .2
• .2222
• .10
• .5

A new credit card has been issued to 2000 customers. Of these customers, 1500 hold a Visa, 500 hold an AA card, and 40 hold a Visa and AA card. Find the probability that a random chosen customer holds a Visa and AA card, given they hold a Visa. 

• .0267
• 37.5
• .02
• .3333

What is the probability that a randomly selected student does not do community service if they do not play sports?

• $\frac{12}{27}$

• $\frac{8}{12}$

• $\frac{8}{27}$

• 
  

  $\frac{8}{18}$
  

A tree diagram is useful in determining the __________of a probability experiment.

• result

• possible outcomes

• event

• none of the above

You flip a coin 20 times and record the results. Is this experimental or theoretical probability?

• Experimental
• Theoretical

If two events are independent, then  $P\left(A\ and\ B\right)=P\left(A\right)\times P\left(B\right)$  

• True

• False

Classify the events as independent or dependent.

A ball is selected from a bin of balls numbered 1 through 10. It is replaced, and then a second ball is selected.

• independent events

• dependent events

Worst President: In a sample of 1446 US voters, 188 said Nixon was the worst president since WWII. Three registered voters are selected at random. Find the probability that all 3 say Nixon is the worst president.

• 0.002

• 0.017

• 0.390

• 0.240