Case 4:  Suppose a researcher believes that total monthly sales of brand Z in newly opened retail stores are affected by both the length of time the store has been open (in months) and the price of Brand Z.  To investigate, the researcher uses sales (in thousands of dollars) from many stores over many months together with information about how long the store has been open.  In this design X1 is the length of time (in months) that the store has been open and X2  is the price of brand Z in the given store for the given month.    –REFER TO THIS CASE FOR THE QUESTIONS 36-38–       Q36: Given the above output for the model, which of the following is true:

Suppose you wanted to survey people within a specific zip code about their needs within a product category.  Unfortunately, when you sent out the surveys your list of potential respondents included some individuals outside of the zip code and there is no way of determining which responses are from within the zip code.  What type of error is this?

Q25: Suppose that during the school year there was a new mathematics camp at some of the schools in the experiment.  The math camp was designed to better prepare children for the standardized test.  Which of the following is true?

Suppose that a firm is investigating attitudes toward a social/political topic within a specific city.  They plan to do this with a survey, but the issue is controversial.  The lead researcher is concerned that only the people with strong opinions will return a mail survey, therefore creating bias results.  The researchers concern could be characterized as a concern about

Consider the following statement from a respondent:         “Toyota vehicles have above average resale value”   Which dimension of attitude toward the Toyota brand does this statement reflect?  

Consider the statement “I am always excited to drive in a BMW.”  Which dimension of attitude toward the BMW brand does this statement reflect? 

Q32: Using the test statistic above, determine the corresponding two-tailed p-value using the table available on CARMEN (the exam appendix).  Write down your work on paper and email an image to faculty after the exam.

How does a researcher determine which set of clustering variables is best?  

Q34 Suppose the researcher wishes to estimate the mean of beliefs about the ability of a child to get a good education across the population of all males.  Using the information in the table above, calculate a 90% confidence interval for this value.  Enter the values of the interval below.  Write down any work on paper and email an image to faculty after the exam.

Suppose you are given the results from two surveys that were run simultaneously on the same population (but different respondents).  Both surveys used the same questionnaire, which includes a Likert scale question on a 1-5 scale.  The first survey yields a mean of 2.86 for this question, and the second survey yields a mean of 2.99.  What type of error explains the difference between the two?