Question

The radio music listener market is diverse. Listener formats might include adult
contemporary, album rock, top 40, oldies, rap, country and western, classical, and jazz. In
targeting audiences, market researchers need to be concerned about the ages of the listeners
attracted to particular formats. Suppose a market researcher surveyed a sample of 170 listeners
of country music radio stations and obtained the following age distribution.

Answer 1

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The radio music listener market is diverse. Listener formats might...

The radio music listener market is diverse. Listener formats might include adult contemporary, album rock, top 40, oldies, rap, country and western, classical, and jazz. In targeting audiences, market researchers need to be concerned about the ages of the listeners attracted to particular formats. Suppose a market researcher surveyed a sample of 170 listeners of country music radio stations and obtained the following age distribution.

Age Frequency

15 — under 20 9

20 — under 25 16

25 — under 30 27

30 — under 35 44

35 — under 40 42

40 — under 45 23

45 — under 50 7

50 — under 55 2

a. What are the mean and modal ages of oldies listeners?

b. What are the variance and standard deviation of the ages of oldies listeners?

Keep 3 decimal places where necessary.

a. Mean =

. Mode: The modal class is

—

. The class midpoint is the mode =

.

b. Variance: s2 =

, Standard deviation:s=

The tolerance is +/— 0.005.

Step-by-step explanation:

in given below

Explanation:-

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