Assignment 2: Testing Differences

Assignment 2: Testing Differences

EMAILyour answers to the TA byWednesday, November 13 at 11pm. For the applied questions, include all SPSS outputs and interpret the findings!

Review Questions: Briefly answer the following questions below

1. In each of the following situations, indicate the statistical test you would conduct and WHY!
   1. A researcher is interested in how consumers make purchase decisions for a specific type of product. He develops a survey where, among other things, he asks to what extent price matters to them (on a Likert scale from 1 to 5) and to what extent quality matters to them (on a Likert scale from 1 to 5) when trying to decide which brand to buy.
   2. Respondents in a survey of 1,000 households were asked about their travel history. Specifically, they were askedhow often they have been to Europe in the past five years. They were also classified by interest type (art-lovers, food-lovers, or sports-lovers). The question is whether interest typeinfluences travel history.
   3. A restaurant is working on a new strategy to get consumers to eat healthier. They decide to run an experiment. As part of the experiment, the restaurant varies the presentation format of their menu. One week, they present their menu in picture format (that is, patrons see the picture of a dish and the name). The other week, they present their menu in text format (that is, patrons see a text description of a dish and the name). The restaurant is measuring how much money customers spent on a healthy meal on average each week.

Applied Questions (You will need to open the file “assignment2.sav” in SPSS to answer the questions below.

In an experiment, respondents were asked to rate a new skin cream product that is positioned as being able to prevent skin cancer. Participants were first assigned to one of two conditions. In one condition (“free” condition), participants were told that the company provides this product for free for a short period of time. In the other condition (“100% off”), participants were told that the company provides this product for 100% off for a short period of time. They were then asked to rate the cream on several dimensions:  likelihood of side effects (1 = not at all likely, 7 = very likely), need for this cream (1 = not at all, 7 = very much), effectiveness of this cream to prevent skin cancer (1 = not at all effective, 7 = very effective), reliability of the skin cream (1 = not at all reliable, 7 = very reliable). They were also asked to indicate the climate where they live (1 = tropical, 2 = continental, 3 = polar)and how likely they think they are to have skin cancer in their lifetime (1 = not at all likely,7 = very likely). The data obtained are available on BB labeled “assignment2.sav”.

Use SPSS to answer the following questions. In each case, formulate H1 and H0, conduct
the appropriate test and write up the results (see the slides from last class for information on how to write up test results).

1. Does condition influence
   1. the extent to which participants think people need this cream?
   2. the extent to which participants think people need this cream?
2. Do the respondents rate this skin cream as more effective or as more reliable?
3. Does type of climate people live in influencehow likely they think they are to have skin cancer in their lifetime?
4. Do participants in the two conditions differ with regard tothe extent they expect this skin cream to work?