Use the Traditional Method of Hypothesis Testing to Test the Given

question 108

Essay

Use the traditional method of hypothesis testing to test the given claim about the means of two populations. Assume that two dependent samples have been randomly selected from normally distributed populations.
-Ten different families are tested for the number of gallons of water a day they use before and after viewing a conservation video. At the 0.05 significance level, test the claim that the mean is the same before and after the viewing. $$\begin{array} { l l l l l l l l l l l } \text { Before } & 33 & 33 & 38 & 33 & 35 & 35 & 40 & 40 & 40 & 31 \\\hline \text { After } & 34 & 28 & 25 & 28 & 35 & 33 & 31 & 28 & 35 & 33\end{array}$$

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Definitions:

Pleasant Environment

An environment that is enjoyable or soothing to be in due to its aesthetics, atmosphere, or conditions.

Full-line Discount Store

Retail establishments that offer a wide range of products at reduced prices, typically in a large-store format.

Service Retailer

A firm that primarily sells services rather than merchandise.

Pharmaceutical

Relating to the preparation, dispensing, and effective use of medicinal drugs for treating or preventing diseases.