The radio music listener market is diverse. Listener formats might include adult contemporary, album rock, top 40, oldie

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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
15-20 20-25 25-30 30-35 35-40 40-45 45-50 50-55 Frequency 19 16 27
44 42 23 7 2 i. What is the modal ages of country music listeners,
discuss your result? ii. Average weight of 5 patients is 60 kg.,
and weights of 4 patients are 60, 59, 62 and 61 kg., find the
weight of 5th patient