The prediction of a roll of 12 is the expected value of rolling a 12
Jenny can predict 15 as the number of times she will roll a 12
How to predict the number of rolls of 12?
The dice is a 12-sided dice.
This means that the dice has 12 sides.
So, the probability of obtaining a 12 is:
P(12) = 1/12
In a roll of 180 times, the number of times a 12 is expected to show is:
E(x) = np
This gives
E(x) = 180 * 1/12
Evaluate the product
E(x) = 15
Hence, Jenny can predict 15 as the number of times she will roll a 12
Read more about expected values at:
https://brainly.com/question/15858152
