Question

T2.4. The figure shows a cumulative relative frequency graph of the number of ounces of alcohol consumed per week in a sample of $150$adults. About what percent of these adults consume between $4$and $8$ounces per week?

(a)$20\%$(b)$40\%$(c)$50\%$(d)$60\%$(e)$80\%$

Short answer

The percent of the adults consume between $4$and $8$ounces per week is option (b)$40\%$.

Step-by-step solution

Step 1:Given information

A graph shows a cumulative relative frequency of the number of ounces of alcohol consumed per week in a sample of 150 adults.

Explanation

The cumulative relative frequency graph contains points roughly at $(4,20)$and$(8,60)$.
This implies that about $20\%$of the adults consume less than $4$ounces per week and about $60\%$of the adults consume less than $8$ounces per week.

$60\%-20\%=40\%$
About $40\%$of the adults to consume between $4$ad $8$ounces per week.