# Study Question

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Study Questions--Hypothesis Testing

1. What are the appropriate statistical tests for the following: * The hypothesis is that the average campaign contributions, in dollars, of Democrats, Republicans, and Independents differ.

* The hypothesis is that department store managers and boutique owners differ in the number of "yes" or "no" responses given to a question about interest in a new product.

* A manager suspects that the effect of a recent advertising campaign has had different effects on average store sales across the five states in her region.

* The hypothesis is a comparison of response rates in a survey in which half the respondents were given a cash incentive and the other half were not.

* A researcher believes that, in a grocery store, couples spend more than individuals.

* The hypothesis is that the monthly sales of salespeople who are given ethics training will exceed that of salespeople who are not given ethics training.

2. A firm has 24 stores split between East and West regions. How would a researcher test the hypothesis that the two regions had different satisfaction ratings?

3. How would the same researcher test the hypothesis that the satisfaction ratings in both regions had improved from last year to this year?

4. A researcher measures the proportion that intend to purchase in groups representing two market segments. Test the hypothesis that the two samples represent different populations. * sample 1: proportion = .77; n=55 * sample 2: proportion = .68; n=46

5. Brand loyalty, on a 0-100 scale, was measured in three states. The state means were * Florida: 37.0 * Michigan: 50.3 * Hawaii: 51.5

Below is the result of the analysis that was done:

source | sum squares | d.f. | mean square | F | sig. | corrected model | 681.7 | 2 | 3340.9 | 3.22 | .043 | intercept...

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