1. Data were collected at a student run caf on 47 randomly selected days. The number of bread sandwiches sold and the number of wraps sold on each of those days were recorded.The caf manager wants to know if there is evidence of a linear relationship between the number bread sandwiches and the number of wraps they sell daily. They test the following hypotheses:

H₀: = 0 H_a: 0

They find Pearson'sr = 0.57 and p < 0.001

Given theinformation above, at the 0.05 alpha level we should [ Select ] ["reject", "fail to reject"] the null hypothesis.

There [ Select ] ["is evidence", "is not evidence"] of a linear relationship between the number of bread sandwiches sold and the number of wraps sold in the population of all days.

2. Research question:Can how much time a customer spends in a store be used to predict how much they spend there?

The explanatory variable is [ Select ] ["time spent", "customers", "money spent"] .

The response variable is [ Select ] ["time spent", "customers", "money spent"] .