Question

Testing if you're smart. My teacher can solve it in 3 min

Answer 1

To determine the mean of the given probability distribution, all we have to do is get the sum of the product of the number of cups and its probability.

`0(0.05)+1(0.10)+2(0.75)+3(0.10)`
`0+0.10+1.5+0.3`
`1.9\approx2`

Therefore, the average or the mean number of cups is 2.