Question: To complete this scenario, use the Mall of Elbonia Interview Results file linked in the Resources.

One hundred customers at the Mall of Elbonia (MoE) were given a brief interview as they concluded their shopping trips. Examine the resulting data in the Mall of Elbonia Interview Results file. For each customer (by row), the spreadsheet contains data on:

? The customer's gender.

? How long the customer spent in the mall.

? How much he or she spent on food and clothing purchases.

? The customer's rating of the mall's friendliness and attractiveness.

MoE's concessions manager believes the average amount that mall customers spend on food during a visit has increased over the historical average of $18.75, due to the opening of some new upscale restaurants in the mall. Use the data in the file to test his hypothesis.

? What is the null hypothesis?

? Would you reject it at alpha = .05?