Question

3. Camille rolls two number cubes together

Answer 1

30 times she should expect he sum to be 7.

Step-by-step explanation:

Here we have , Camille rolls two number cubes together  and records the sum. If she does this  180 times, We need to find how many times should she  expect the sum to be 7 . Let's find out:

Total number of outcomes are 36 ( there can be 36 pairs of sum possible ) , and favorable outcomes are :

$(1,6),(2,5),(3,4),(4,3),(5,2),(6,1)$ i.e. 6 , So

Probability = ( Favorable outcomes )/( Total outcomes )

⇒ $Probability = \frac{1}{6}$

But , she does this  180 times so we have ,

⇒ $Times = \frac{1}{6}(180)$

⇒ $Times = 30$

Therefore , 30 times she should expect he sum to be 7.