Math 119 Lesson 4.2 Addition Rules for Probability
1.
A group fitness gym classifies its fitness class attendees by class type and member status. The marketing team has gathered data from a random month, in which there were 2278
class attendees. The data is summarized in the table below.
1
Class Type and Member Status of Class
Attendees
Class Type
Member
Non-Member
Barre
183
252
Boot Camp 157
266
Boxing
243
250
Spinning
204
195
Yoga
298
230
What is the probability that an attendee does not attend a boot camp class? Enter a fraction or round your answer to 4
decimal places, if necessary.
Answer:
_______________
Correct Answer: 0.8143
2.
A standard pair of six-sided dice is rolled. What is the probability of rolling a sum greater than 8
? Express your answer as a fraction or a decimal number rounded to four decimal places.
Answer: _______________
Correct Answer: 5
18
or 0.2778
