A Statistician Employed by a Television Rating Service Wanted to Determine

question 111

Essay

A statistician employed by a television rating service wanted to determine whether there were differences in television viewing habits among three residential areas in South Australia. He took a random sample of five adults in each of the areas and asked each to report the number of hours spent watching television in the previous week. From the data shown below, can he infer at the 5% level of significance that differences in hours of television watching exist among the three residential areas? $$\begin{array} { | c | c | c | } \hline \text { Henley Beach } & \text { West Lakes Shore } & \text { Glenelg } \\\hline 25 & 30 & 23 \\\hline 25 & 33 & 18 \\\hline 18 & 40 & 21 \\\hline 15 & 29 & 20 \\\hline 27 & 36 & 10 \\\hline\end{array}$$

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Definitions:

Link Child Fields

The process of associating fields in a child table with fields in a parent table to maintain data integrity in a relational database.

Link Master Fields

In database applications, it relates to the action of creating relationships between master (primary) and detail (secondary) fields to synchronize data.

Option Buttons

Interactive elements within a graphical user interface that allow users to make one selection from a set of predetermined options.

Option Group

A graphical control element allowing the user to choose only one of a predefined set of mutually exclusive options.