4/2/2019 EM 7 Do Now - Probability Review

You flip a nickel three times.
Find the probability that all flips will land on tails.

• 1/2
• 1/4
• 1/6
• 1/8

If you roll two fair six-sided dice, what is the probability that the dice show the same number?

• 1/6
• Jim
• 1/7
• 6/1

Kyleigh saw 10 blue, 8 red, and 42 white cars drive by her house in 1 hour. What is the experimental probability that the next car the drives by her house will not be a white car?

• .5

• .6

• .3

• .7

A restaurant surveys customers with the following results: 8 pizzas, 12 hamburgers, 14 pastas, and 6 steaks. What is the experimental probability of pizza or steak?

P(pizza or steak)

• 20%

• 65%

• 50%

• 35%

How many outfits are possible with 5 pairs of jeans, 8 t-shirts, and 2 pairs of shoes?

• 15
• 40
• 80
• 10

The cafeteria has 2 choices of salads, 3 choices of entrees, and 2 choices of beverages. How many meal combinations are available and why?

• 7 because 2 + 3 + 2
• 12 because 2 x 3 x 2

A bag contains 5 quarters, 2 dimes, and 4 pennies. What is the probability of picking a quarter?

• 5/11
• 5/6
• 1/3
• 5

Clara brings a box of donuts to work that contains one donut in each flavor. First the secretary chooses one. Then the office manager makes a selection.

• Dependent
• Independent

A box contains 5 purple marbles, 3 green marbles and 2 orange marbles. Draws are made without replacement. P(orange,green)

• 1/15
• 2/15
• 3/31
• 1/5

A box contains 5 purple marbles, 3 green marbles and 2 orange marbles. Draws are made without replacement.P(both marbles are purple)

• 2/9
• 1/3
• 1/2
• 1/4