The probability that a student is a sophomore and does not exercise is 42/600, or 7/100.
This probability can be calculated by dividing the number of sophomores who do not exercise (42) by the total number of students in the survey (600).
The contingency table provided in the question shows that there are 150 sophomores in the survey, and 42 of them do not exercise. This means that the probability of being a sophomore and not exercising is 42/150, or 7/25. However, the question asks for the probability as a simplified fraction, so the fraction can be simplified further to 7/100.
Overall, this means that the probability of being a sophomore and not exercising is relatively low, as it represents just 7% of the total number of students in the survey.
Learn more about Simplified Fraction here:
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