Calculate

the quartile 2 for the data table given below.

A multiple regression model has the form

Y = 7 + 2X₁ + 9X₂

As x₁ increases by 1 unit (holding x₂

constant), y is expected to

Calculate

the quartile 3 for the data table given below.

Jason believes that the sales of coffee at his coffee shop depend upon

the weather. He has taken a sample of 6 days. Below you are given the results

of the sample.

Calculate

the quartile 1 for the data table given below.

A regression model involved

5 independent variables and 136 observations. The critical value of t for

testing the significance of each of the independent variable's coefficients

will have

Last school year, the student body of a local university consisted

of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors. A sample of 300

students taken from this year's student body showed the following number of

students in each classification.

We are interested in determining whether or not there has been a

significant change in the classifications between the last school year and this

school year.

The calculated value

for the test statistic equals