Question

a) Predict the number of 6s you will get if you roll a number cube 30 times.
b) Predict the number of even numbers you will get if you roll a number cube 25 times.

Answer 1

well,
P(6) = 1/6
P(even) = 3/6
so now multiply each probability by the number of rolls.

Answer 2

a) there are 6 faces on the cube
... a 6 (or any other specific number) is expected 1/6 of the time
... 1/6 * 30 = ?

b) half of the numbers on the cube are even
... half of the rolls are expected to result in even numbers

Answer 3

Predict no of 6s