Q1) i) You want to examine regional differences (IV) in household savings (DV measured in dollars.) You arbitrarily choose samples of households in West, South, and East.

ii) You wish to compare differences in sales dollars (DV) for 43 employees before and after they have attended motivational seminar.

iii) A sample of people is asked their height, and then measurement of their actual height is taken.  Your null hypothesis is that self-reported and actual heights (DV is height measured in inches) do not vary.

iv) You want to test null hypothesis that gender (IV) makes no difference in buying one of four makes of cars (DV= Honda, Toyota, Lexus, Acura). Which statistical test would you conduct?

v) Re item 4, assume the critical value for this test is 4.92, and you obtain a computed statistical value of 7.45.   Is there evidence to refuse null hypothesis? Describe why or why not?