Chapter 1 Test Probability and Statistics

What is the probability that a student does not play on a sports team? 

• .5

• .45

• .55

• .2855
• .6246
• .0922
• .3230

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

• .2

• .2222

• .10

• .5

What statement does the shaded region represent?

• A or B

• A and B

• A

• B

What is P(Foreign language | Sport)?

• 14/27

• 7/12

• 23/47

• 37/47

P(Pizza|Senior):

• 10/15

• 4/5

• 2/3

• 10/5

A jar contains black and white marbles. Two marbles are chosen without replacement. The probability of selecting a black marble and then a white marble is 0.34, and the probability of selecting a black marble on the first draw is 0.47. What is the probability of selecting a white marble on the second draw, given that the first marble drawn was black?

• 16%

• 1.38%

• 72.3%

• Not enough information

45% total of the children in a school have a dog, 30% total have a cat, and 18% have a dog and cat. What percent of those who have a cat also have a dog?

• 60%

• 40%

• 24%

• 1.7%

What is P(Ace given hearts)?

• 9%

• 7.7%

• 25%

• 6.3%

A day in the year is randomly chosen. Given the day is in the month of December, what is the probability the day is the 25^th? These events are

• Independent

• Dependent

• Conditional