Applying Probability Rules

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%

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

• About 20%

• About 18%

• About 14%

• About 12%

Find P(Girls OR Can Bike)

What is the probability that the person picked will be a boy given they speak german? 

• .7273

• .4

• .16

• .22

What statement does the shaded region represent?

• A or B

• A and B

• A

• B

Given a standard number cube, and the events of rolling an odd number or a 4. Are the events mutually exclusive?

• Not Mutually Exclusive

• Mutually exclusive

• 1/2

• 1/6

In a standard deck of 52 cards there are 13 diamonds and 13 hearts (red) and 13 spades and 13 clubs (black).  Find the probability of choosing a card at random that is a spade OR a 7

• 1/52

• 1/13

• 4/13

• 17/52

find the probability of choosing a student at random that plays an instrument OR a sport

• 1/2

• 13/20

• 21/20

• 4/5