probability and simulate

Question

Suppose that 70% of all people in Ontario wear seat

belts.

(a) Explain how the spinner shown could be used

to simulate how many people in a random

sample wear seat belts.

(b) If you would like to know how many people

out of a randomly selected group of 30 are

likely to wear seat belts, would 30 trials give

you enough data? Explain.

Answer 1

a) need a picture of the spinner

b) to be enough data, must have at least 10 successes (seat belts) and 10 failures (not seat belts) out of 30.