Probability Rules

You pick 2 cards from a standard deck of cards, WITHOUT REPLACEMENT, what is the probability that you draw a club (clover) and then a heart?

A small veterinary practice currently has 95 patients that they see regularly. Twelve of the animals are birds, 22 are cats, and 61 are dogs. An emergency call comes into the office, what is the probability that the animal that needs to be seen is not a cat?

• none of these

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

• 91

• 52%

• 17%

• 35%

Find P(Girls OR Can Bike)

What is the probability that a student plays on a sports team given they play an instrument?

• .7273

• .8

• .55

• .2222

What statement does the shaded region represent?

• A or B

• A and B

• A

• B

What percentage of the days that it rained, did they forecast no rain?

• About 20%

• About 18%

• About 14%

• About 12%

A factory produces 80% of its products in Plant A and 20% in Plant B. If 5% of the products from Plant A are defective and 10% from Plant B are defective, what is the probability that a randomly selected defective product came from Plant A?