Question

A cube with sides numbered 1 to 6 is rolled 300 times. What is the best prediction for the number of times that a 1 or 2 would be rolled?


A exactly 50 times

B about 50 times

C exactly 100 times

D about 100 times

Answer 1

Each number on a die has a 1/6 chance of being rolled.

A 1 or a 2 would be 1/6 + 1/6 = 2/6 = 1/3 chance.

300 rolls x 1/3 = 100

the answer would be D. About 100 times