Question

A biased dice was rolled and the scores recorded in the table below.

Score
1
2
3
4
5
6
Frequency
11
22
7
8
13
19
a) Estimate the probability that on the next roll the score will be 4.
b)
If the dice is rolled 400 times, about how many 2s would you expect to get?

Answer 1

a) P(4) = 8/80 = 1/10

b) E(2) = (22/80)(400) = 22(5) = 110 times