A small train at an amusement park is carrying passengers. Half of the passengers are 6 years old, 1/10 are 7 years old, 1/5 are 8 years old, and 1/5 are 9 years old.

What is the expected age for one of the passengers on the train?

Question 4 options:

6 years

7.1 years

8 years

8.5 years

Question

Finn Roberts

30 September, 16:26

+2

Answers (1)

Know the Answer?

Malcolm Cannon · Answer 1

6·0.5 + 7·0.1 + 8·0.2 + 9·0.2 = 7.1

So the correct answer is 7.1 years.

A small train at an amusement park is carrying passengers. Half of the passengers are 6 years old, 1/10 are 7 years old, 1/5 are 8 years old, and 1/5 are 9 years old.What is the expected age for one of the passengers on the train?Question 4 options:6 years7.1 years8 years8.5 years