Question

Rory was with some friends outside an ice cream parlor. He noticed that one out of every four people bought a vanilla cone. He wants to know the estimated probability that five randomly picked people entering the shop will not buy vanilla cones. How could you design a simulation of the scenario?
A. Spin a spinner with five equal sections five times. On the spinner, one section represents vanilla and four sections represent other flavors.
B. Spin a spinner with five equal sections four times. On the spinner, one section represents vanilla and four sections represent other flavors.
C. Spin a spinner with four equal sections five times. On the spinner, one section represents vanilla and three sections represent other flavors.
D. Spin a spinner with four equal sections four times. On the spinner, one section represents vanilla and three sections represent other flavors.

Answer 1

C. would be the correct device to use in trials.

But the actual probability is:

(1-1/4)^5

243/1024

(about 23.73% chance none of the five chose vanilla)

Answer 2

The answer to the question C.