In a survey, 100 students were asked “do you prefer to watch television or play sport?” Of the 46 bo

Question

In a survey, 100 students were asked “do you prefer to watch television or play sport?” Of the 46 boys in the survey, 33 said they would choose sport, while 29 girls made this choice. The results are shown in the table below.

	Boys	Girls	Total
Television
Sport	33	29
Total	46		100

a student selected at random prefers to watch television;
a student prefers to watch television, given that the student is a boy.

[4]

Accepted Answer

Thus $P(\text{television})=0.38$, and $P(\text{television}\mid\text{boy})=\frac{13}{46}$.

Complete a contingency table and calculate marginal and conditional probabilities.

Complete a contingency table and calculate marginal and conditional probabilities.

Solution:

Solution locked