Quiz #2 Math/Stat 231 complete solutions correct answers key

Quiz #2 Math/Stat 231 complete solutions correct answers key

1. The M&M candy company claims that 35% of its M&Ms are blue. If 8 M&Ms are randomly selected from a bag, then find the probability that at least one of them is blue.

2. A jar contains 20 marbles: 8 black, 6 yellow, 4 blue, and 2 purple. Two marbles are drawn without replacement. What is the probability that the first marble is black and the second marble is purple?

3. A single card is drawn from a standard deck of playing cards. What is the probability of getting a black card or a Jack?

4. The table below shows the employment status of individuals in a particular town by age group.

Age Group

Full-time

Part-time

Unemployed

0 – 17

24

164

371

18 – 25

185

203

148

26 – 34

348

67

27

35 – 49

581

179

104

50+

443

162

173

 If an individual in this town is selected at random, find the probability that the individual is employed part-time, given that he or she is between the ages of 35 and 49.

5. Mr. Smith’s science class consists of 18 girls and 12 boys. He randomly chooses one student who comes to the front of the room for a demonstration. What is the probability that the student is not a girl?