Probability review 2

Paul is having a backyard BBQ.  He has four tables that have brown tablecloths and six of the tables are covered with black tablecloths. Guests will be randomly seated at the tables as they arrive.  Each table can seat 8 guests.  What is the probability that the first guest to arrive will be seated with a brown tablecloth?

• 4/5
• 2/5
• 3/5
• 1/2

A number cube is rolled three times.   What are the chances that the number cube will land on 4 all three times?

• 1/36
• 1/2
• 1/216

The probability that James receives junk mail is 15 percent.  If he receives 80 pieces of mail in a week, about how many of them can he expect to be junk mail?

• 12
• 8
• 80

Jane painted the faces of a fair die for a probability experiment.  If the probability of the die showing blue is 4/6, how could Jane have painted the faces of the die?

• red, red, red, blue, blue, blue
• blue, blue, blue, blue, red, red
• yellow, blue, blue blue, red, red

Which of these best represents the sample space associated with tossing a coin 3 times?

• h-h-h, h-h-t, h-t-t, t-h-t, t-t-h, t-h-h, t-t-t, h-t-h
• h-h, t-t, h-t, t-h
• h, h, t, h-h-h, t-t-t

Albert flipped a coin 8 times.  He flipped heads 5 times and tails 3 times.  What is the experimental probability that Albert will flip heads on the next flip?

• 1/6
• 1/2
• 5/8

Blue 8
Yellow 5
Red 2
Purple 3
orange 2
What is the probability of drawing a purple after 140 times?

• 35
• 28
• 21

At the fair, 24 students put their name in a drawing for a new video game.  Fourteen of the 24 students were girls.  What is the probabilty that a boy will win the video game?

• 5/12
• 7/12
• 24/14

2 chocolate chip
3 oreo
4 sugar
Randomly choosing a cookie, what is the probability that the first cookie will be a chocolate chip then put it back and grab a oreo cookie?

• 1/9
• 6/81
• 5/9