Question

The following two-way table describes student's

Answer 1

Answer:

$P(Work | Senior) = 0.14$

Step-by-step explanation:

Given

The attached table

Required

$P(Work | Senior)$

This is calculated using:

$P(Work | Senior) = \frac{P(Work \ n\ Senior)}{P(Senior)}$

This gives:

$P(Work | Senior) = \frac{n(Work \ n\ Senior)}{n(Senior)}$

From the table:

$n(Work \ n\ Senior) = 5$

$n(Senior) = 25 + 5+ 5 = 35$

So:

$P(Work | Senior) = \frac{5}{35}$

$P(Work | Senior) = 0.14$