Question

This probability distribution shows the typical distribution of the number of shoes in a teenager's closet. Using the distribution, find the probability that a teenager has 3 or fewer pairs of shoes in their closet.

Answer 1

• Total teenagers=12+20+38+20+10=90
• Student having 3 or fewer pairs=12+20+38=70

`\\ \rm\Rrightarrow P(\leqslant 3)`

`\\ \rm\Rrightarrow (70)/(100)`

`\\ \rm\Rrightarrow 70\%`

Answer 2

70%

Explanation:

Total number of teenagers surveyed

12+20+38+20+10 = 100

Find the number of teenagers with 3 or fewer pairs of shoes

12+20+38 =70

P(3 or fewer) = teenagers with 3 or fewer/ total

= 70/100

= 70%