Question

Use the following information for the following questions An urn contains 5 red balls, 4 green balls and 4 yellow balls, for a total of 13 balls. A random selection of balls will be made.

1. If 4 balls are randomly selected with replacement, what is the probability of obtaining 2 yellow balls and 2 red balls? Demonstrate how to obtain the answer. a)0.08 b)0.10 c)0.12 d)0.14 e)0.1754785

2. If 5 balls are randomly selected without replacement, what is the probability of selecting 2 red, 2 green and 1 yellow ball? Demonstrate how to obtain the answer. a)0.13 b)0.15 c)0.17 d)0.19 e)0.21

3. If 5 balls are randomly selected without replacement, what is the probability of selecting at least 2 red balls, given that at least 1 yellow ball is selected? Hint: this is a conditional probability. Demonstrate how to obtain the answer. a) 0.59 b) 0.61 c) 0.63 d) 0.65 e) 0.67

Answers are bolded. Thanks.

Answer 1