Question

Rishi is 5 employed in ABC Electronics store. A survey was conducted to find the probability of a
person buying a computer depending upon 2 factors – age and whether the buyer is a student or
not? Help Rishi in predicting whether the customer will purchase the computer or not, by
drawing a decision tree from the following data table.

Answer 1

Answer:

$\bold\red{ \: AnswER \: }$

30% of 200 + 20% of 450 – 25% of 600

= (30 / 100 × 200) + (20 / 100 × 450) – (25 / 100 × 600)

= (30 × 2) + (2 × 45) – (25 × 6)

We get,

= 60 + 90 – 150

= 150 – 150

= 0

Answer 2

Answer:

30% of 200 + 20% of 450 – 25% of 600

= (30 / 100 × 200) + (20 / 100 × 450) – (25 / 100 × 600)

= (30 × 2) + (2 × 45) – (25 × 6)

We get,

= 60 + 90 – 150

= 150 – 150

= 0