Question

The Seniors at three high schools were surveyed about their plans after graduation. The following table shows the responses, classified by high school.

I really need an answer. Thanks!

Answer 1

E. 396/538

Explanation:

The probability that the senior selected will not be from High School B given that the senior did not answer colege:

First, what's the probability of not having answered college? This will be out denominator.

P(not choosing college) = 244 + 106 + 188 = 538

Next, what's the probability that a senior in that category is not from HS B? Well, add the probabilities that the senior is in HS A or C:

P(senior is in HS A or C and answered not college) = 49 + 99 + 63 + 83 + 31 + 71 = 396

Our answer is E. 396/538.