Question

What is the conditional relative frequency of selling an item marked 50% off, provided the item sold is item 2?

Answer 1

Conditional relative frequency = 0.67

Explanation:

50% off Buy 1, get 1 free Total

Item 1 12 8 20

Item 2 20 10 30

Total 32 18 50

Condition relative frequency table:

50% off Buy 1, get 1 free Total

Item 1
`(12)/(20)=0.6`
`(8)/(20)=0.4`
`(20)/(20)=1`

Item 2
`(20)/(30)=0.67`
`(10)/(30)=0.33`
`(30)/(30)=1`

Total
`(32)/(50)=0.64`
`(18)/(50)=0.36`
`(50)/(50)=1`

Therefore, conditional relative frequency of selling an item marked 50% off, provided the item sold is item 2 = 0.67