Question

The relative frequency histogram below represents the age in years of the first 100 children to have their portraits taken at the “See What Develops” photography studio. What is the probability that the next child to have portraits taken will be between 1 and 2 years old?
http://media.education2020.com/evresources/648-13-08-00-00_files/i0200000.jpg

a.
10%
c.
11%
b.
30%
d.
15%

Answer 1

d?

Answer 2

@Daniel56k

Answer 3

@welshfella

Answer 4

100 multiply by 0.10

Answer 5

so a? XD

Answer 6

yep

Answer 7

thank you

Answer 8

the total area of the histogram is 1 square unit and is equivalent to 100 children.
The reqired probabilty = the area of the '1 to 2' rectangle

Answer 9

- oh multiply that area by 100 to get the % probability

Answer 10

yep @welshfella