Question

James surveyed people at school and asked whether they bring their lunch to school or buy their lunch at school more often. The results are shown below. Bring lunch: 46 males, 254 females Buy lunch: 176 males, 264 females The events "male" and "buys lunch" are not independent because

Answer 1

d on edge

Explanation:

Answer 2

Answer:P(male | buys lunch) = 0.4 and P(male) = 0.3.

Explanation:

There are 46+176 = 222 males.

There are 254+264 = 518 females.

There are a total of 740 people.

The probability of being male is 222/740 = 0.3

There are 46+254 = 300 people that bring lunch.

There are 176 + 264 = 440 people that buy lunch.

P(male | buy lunch) = 176 / 440 = 0.4

P(male | buys lunch) = 0.4 and P(male) = 0.3.