Question

question 5 of 14
in a survey, 300 adults and children were asked whether they preferred hamburgers or pizza. the survey data are shown in the relative - frequency table.

	hamburgers	pizza	total
children	0.11	0.29
total

what percentage of the people surveyed prefer pizza?

a. 60%
b. 36%
c. 29%
d. 65%

Explanation:

Step1: Identify relevant relative - frequencies

The relative - frequency of adults who prefer pizza is 0.36 and the relative - frequency of children who prefer pizza is 0.29.

Step2: Calculate the total relative - frequency of pizza - preference

Add the relative - frequencies of adults and children who prefer pizza: $0.36 + 0.29=0.65$.

Step3: Convert to percentage

Multiply the total relative - frequency by 100 to get the percentage: $0.65\times100 = 65\%$.

Answer:

D. 65%