BUAL 2650 Gupta Exam 2 || with 100% Accurate Solutions.
Question : 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
Correct answer: a. always
Question : 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
Correct answer: d. PInternet − Pstore ≤ .10
Question : 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 would be stated as
- PInternet − Pstore > 0
- PInternet − Pstore < 0
- PInternet − Pstore ≥ .10
- PInternet − Pstore ≤ .10
- PInternet − Pstore > .10
Correct answer: e. PInternet − Pstore > .10
Question : 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
Correct answer: c. 9
Question : The ________ measures the strength of the linear
relationship between the dependent variable and the independent variable.
- correlation coefficient
- distance value
- Y-intercept
- residual
Correct answer: a. correlation coefficient
Question : The correlation coefficient may assume any value
between
- 0 and 1
- −∞ and ∞
- 0 and 8
- −1 and 1
- −1 and 0
Correct answer: d. −1 and 1
Question : The following results were obtained as part of a
simple regression analysis.r2 = .9162F statistic from the F table = 3.59 Calculated value of F from the ANOVA table = 81.87
α = .05
p-value = .000 The null hypothesis of no linear relationship between the dependent variable and the independent variable
- is rejected
- cannot be tested with the given information
- is not rejected
- is not an appropriate null hypothesis for this situation.