Question

About 250 million drivers are registered in the United States. While on a trip with her family, a student counted the number of male drivers and female drivers on the road. She counted 82 male drivers and 118 female drivers. Using this sample, predict the number of female drivers out of 250 million, rounded to the nearest million. Show all work and justify your answer.

Answer 1

She could estimate that there would be about 148 million female drivers.

From her data, she found there were 118 females drivers out of the total 200 drivers that she counted.

That is 118 out of 200 or 0.59 or 59%.

Now, just take 59% of 250.

0.59 x 250 = 147.5 which rounds to 148.