Suppose that of the 300 seniors who graduated from Schwarzchild High School last

Question

Suppose that of the 300 seniors who graduated from Schwarzchild High School last spring, some have jobs, some are attending college, and some are doing both. The following Venn diagram shows the number of graduates in each category C, and not J 30 /C, and 45 Jand not C 135 C Go to college -Have a job What is the probability that a randomly selected graduate has a job if he or she is attending college? Give your answer as a decimal precise to two decimal places. What is the probability that a randomly selected graduate attends college if he or she has a job? Give your answer as a decimal precise to two decimal places

Explanation / Answer

1. Probability that a randomly selected graduate has a job if attending college = P(J|C)

= P(J C) / P(C)

= 45 / (30 + 45)

= 45 / 75

= 0.6.

Probability that a randomly selected student attends college if with job

= P(C|J)

= P(C J) / P(J)

= 45 / (45 + 135)

= 45 / 180

= 0.25.

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