Sociology: Methods of Communication Random samples of people ages 15–24 and 25–34 were asked about their preferred method of (remote)

communication with friends. The respondents were asked to select one of the methods from the following list: Video call, text message, e-mail, other.

(i) Make a cluster bar graph showing the percentages in each age group who selected each method.

(ii) Test whether the two populations share the same proportions of preferences for each type of communication method. Use a 5 0.05.

Preferred Communication Method Age Video Call Text Message E-mail Other Row Total 15–24 48 40 5 7 100 25–34 41 30 15 14 100 Column Total 89 70 20 21 200

• Investigate how well observed data fits a given distribution using a goodnessof-
fit test.
• Compute the sample x 2 statistic using observed and expected frequencies.
• Compute the P-value.
• Conclude a goodness-of-fit test.AppendixLO1