Module 12 Probability

There are 12 face cards in a standard deck of 52 playing cards. If Stevie selects a card at random, what is the probability that she will pick a face card?

• 12/52 = 3/13 = 23%

• 12/50 = 6/25 = 24%

• 12/100 = 3/25 = 12%

• 40/52 = 10/13 = 77%

David flips a coin (heads, tails) and rolls a number cube that has the numbers 1 through 6. Possible outcomes include H1, H2, H3, H4, H5, H6, T1, T2, T3, T4, T5, T6. What is the probability that he rolls an even number and flips tails?

• 12/12 = 1 = 100%

• 9/12 = 3/4 = 75%

• 6/12 = 1/2 = 50%

• 3/12 = 1/4 = 25%

Twila can choose between 3 t-shirts and 3 pairs of jeans. If she selects 1 t-shirt and 1 pair of jeans at random, how many possible outfits are in the sample space?

• 7

• 12

• 9

• 6

The experimental probability that Johnny will strike out in baseball is 2/9. About what percent of the time will Johnny strike out?

• 22%

• 55%

• 78%

• 33%

Alexis saw 8 cars, 13 trucks, and 2 motorcycles drive by her house in an hour. What is the experimental probability that the next vehicle that drives by her house will NOT be a car?

• 35%

• 65%

• 8%

• 45%

If there is a 0.99 chance that Moira will wear a wig today, which of the following would best describe her chances of wearing a wig?

• The event might occur.

• The event is as likely as not to occur.

• The event is likely to occur.

• The event is certain to occur.

If Roland flipped a coin 100 times and he flipped heads 53 times and tails 47 times, what is the experimental probability that the next flip will be heads?

• 50%

• 53%

• 47%

• 100%

If Jocelyn has a flower garden with 30 roses, 25 daisies, and 45 tulips, which flower is she least likely to pick if she picks a flower at random?

• rose

• daisy

• tulip

• can't tell from this info

The experimental probability that Patrick will hit the ball when he is at bat is 4/5. If he is at bat 75 times, how many times can Patrick expect to hit the ball?

• 4 times

• 75 times

• 15 times

• 60 times

Ted (a veterinarian) has seen 45 dogs, 12 cats, 25 cows, and 7 sheep this week. Now he needs to create billing charts for each animal. If he picks an animal at random to chart, which animal is he MOST likely to select first?

• dog

• cat

• cow

• sheep