Which factors are relevant to

Which factors are relevant to the time a consumer spends looking at a product on the shelf prior to selection? The article “Effects of Base Price Upon Search Behavior of Consumers in a Supermarket” (J. Econ. Psychol., 2003: 637–652) reported the following data on elapsed time (sec) for fabric softener purchasers and washing-up liquid purchasers; the former product is significantly more expensive than the latter. These products were chosen because they are similar with respect to allocated shelf space and number of alternative brands.

a. What if any assumptions are needed before the t inferential procedure can be used to compare true average elapsed times?

b. Carry out a test of hypotheses to decide whether the true average difference in elapsed times differs from zero.

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