Question

On a biased dice, the probability of getting a 1 is 0.3

The dice is rolled 150 times
How many one do you expect to roll?

Answer 1

If the probability of getting a 1 each time is 0.3 hence 0.3 of the times, a 1 will be obtained. Thus the number of 1s expected is 0.3 x 150= 45