Question

4 Which of the following describes two complementary events? 1. Josh does his homework Josh doesn't do his homework II A car is going over 50 miles per hour A car is going under 50 miles per hour UL. Jason runs over 8 miles Jason runs under 9 miles. A. I B. I and II C. I and III D. III

Answer 1

Recall that two events are complimentary when one event occurs if and only if the other does not.

1. Given that Josh does his homework Josh doesn't do his homework.

These events are complementary events.

2. A car is going over 50 miles per hour A car is going under 50 miles per hour

These are disjoint events but not complementary events.

2. Jason runs over 8 miles Jason runs under 9 miles.

These are even not disjoint events.

These are not complementary events.

Hence the correct option is A.