BUAL 2650 EXAM 2 STUDY GUIDE & CH. 16 HW questions and answers 2025

BUAL 2650 EXAM 2 STUDY GUIDE & CH. 16 HW
questions and answers 2025

In testing for the equality of means from two independent populations, if the hypothesis of
equal population means is rejected at α = .01, it will ________ be rejected at α = .05.



always

sometimes

never - ANSWER always



A new company is in the process of evaluating its customer service. The company offers two
types of sales: (1) Internet sales and (2) store sales. The marketing research manager believes
that the Internet sales are more than 10 percent higher than store sales. The null hypothesis
would be



PInternet − Pstore > .10.

PInternet − Pstore < .10.

PInternet − Pstore ≥ .10.

PInternet − Pstore ≤ .10.

PInternet − Pstore = .10. - ANSWER PInternet − Pstore ≤ .10.



A new company is in the process of evaluating its customer service. The company offers two
types of sales: (1) Internet sales and (2) store sales. The marketing research manager believes
that the Internet sales are more than 10 percent higher than store sales. The alternative
hypothesis for this problem would be stated as



PInternet − Pstore > 0.

PInternet − Pstore < 0.

, PInternet − Pstore ≥ .10.

PInternet − Pstore ≤ .10.

PInternet − Pstore > .10. - ANSWER PInternet − Pstore > .10.



If we are testing the hypothesis about the mean of a population of paired differences with
samples of n1 = 10, n2 = 10, the degrees of freedom for the t statistic is ________.



19

18

9

8

10 - ANSWER 9



The ________ measures the strength of the linear relationship between the dependent variable
and the



independent variable.

correlation coefficient

distance value

Y-intercept

residual - ANSWER correlation coefficient



The correlation coefficient may assume any value between



0 and 1.

−∞ and ∞.

0 and 8.