Chapter 11.1, Problem 30E

a.

To determine

To find: the percentages of people who attended the show and under 30 years old.

Answer to Problem 30E

the percentages of people who attended the show and under 30 years old is $.34$ %.

Explanation of Solution

the percentages of people who attended the show and under 30 years old is $.34$ %.

Given information:

  $\begin{array}{l}\text{age people}\\ \text{20-29 12}\\ \text{30-39 14}\\ \text{40-49 7 }\\ \text{50-59 2}\end{array}$

Calculation:Total peoples attend the show = $12+14+7+2$

Peoples attended the show under 30 years old = $12$

Percent of people who attended the show under 30 years old = $\frac{12}{12+14+7+2}$

= $\begin{array}{l}\frac{12}{35}\\ .34\end{array}$

b.

To determine

To find: the age group which is median.

Answer to Problem 30E

The median age group is $\text{30-39}$ .

Explanation of Solution

Given information:

  $\begin{array}{l}\text{age people}\\ \text{20-29 12}\\ \text{30-39 14}\\ \text{40-49 7 }\\ \text{50-59 2}\end{array}$

Calculation: The age group 30-39 is the median age fall because this group has not so much low ages and not high ages.

c.

To determine

To state: that the group advertise on a station that younger adults like or on that older adults like or not.

Answer to Problem 30E

Yes, group advertise it.

Explanation of Solution

Given information:

  $\begin{array}{l}\text{age people}\\ \text{20-29 12}\\ \text{30-39 14}\\ \text{40-49 7 }\\ \text{50-59 2}\end{array}$

Yes, the group advertise on a station that younger adults like or one that older adults because this age group has more peoples which attend the show.