The probability that a student passes a class isp(P) =0.59.

The probability that a student studied for a class isp(S) =0.56.

The probability that a student passes a class given that he or she studied for the class isp(P/S) =0.77.

What is the probability that a student studied for the class, given that he or she passed the class(p(S/P))?

Hint:Use Bayes' theorem. (Round your answer to two decimal places.)

p(S/P) =

Additional Materials

• Section 5.1

7.

[-/3 Points]

The relative frequency distribution of the number of phobias reported by a hypothetical sample of 500 college students is given as follows.

0-2 0.47

3-5 0.28

6-8 0.13

9-11 0.08

12-14 0.04

(a) What is the probability that a college student expresses fewer than three phobias?

(b) What is the probability that a college student expresses more than eight phobias?

(c) What is the probability that a college student has between 3 and 11 phobias?

Additional Materials

• Section 5.1