Addition & Multiplication Rule of Probability

If you toss two coins, what is the probability of getting 2 heads?

• 1/2

• 1/4

• 1/8

• 1/16

Suppose a football player has 65% chance of making a goal he can keep each time he tries to make a goal. What is the probability he makes a goal the first three times he tries to but not on the fourth try? Round your answer to three decimal places.

• 0.097

• 0.009

• 0.096

• 0.200

In a jar there are 5 yellow gums and 7 green gums. What is the probability in getting 2 yellow gums without replacement?

• 5/33

• 4/33

• 2/33

• 1/33

There are 6 snickers , 4 m&m’s and 6 cloud 9 chocolates in a box. If Mary chooses 2 of them, what is the probability if she gets 2 snickers, without replacement?

• 1/2

• 1/4

• 9/64

• 1/8

Two hundred people were surveyed about whether or not they like recreational reading and academic reading. The following two-way table displays data for the sample of people who responded to the survey. What is the probability of a randomly selected person from this sample liked academic reading OR disliked recreational reading?

• 4/5

• 3/5

• 2/5

• 1/5

 In a pet store, there are 6 puppies, 9 kittens, 4 gerbils and 7 parakeets. If a pet is chosen at random, what is the probability of choosing a puppy or a parakeet?

• 3/4

• 1/2

• 1/4

• 5/9

A day of the week is chosen at random. What is the probability of choosing a Monday or Tuesday?

• 1/7

• 3/7

• 2/7

• 5/7

The following M & M colors are in the bowl:
4 yellow, 6 orange, 3 green, 5 blue, 2 brown.
P( Yellow or green)

• 1/40
• 7/20
• 6/19
• 1/38

Which of the following shows how to determine P(packers or male)?

• 75/150 + 90/150 - 50/150
• 75/150 + 35/150 - 25/150
• 50/150 + 40/150 + 25/150
• 90/150 + 50/150 - 75/150

Of the mechanical engineers, what is the probability that math is their favorite subject?

• 1.91
• 52%
• 17%
• 35%