Marketing

Chapter 10

10.1. In a t test for a single sample, the sample's mean is compared to the population Mean

10.2. When we use a paired-samples t test to compare the pretest and posttest scores for a group of 45 people, the degrees of freedom (df) are ¬¬¬¬¬44

10.3. If we conduct a t test for independent samples, and n1 = 32 and n2 = 35, the degrees of freedom (df) are 65

10.4. A researcher wants to study the effect of college education on people's earning by comparing the annual salaries of a randomly-selected group of 100 college graduates to the annual salaries of 100 randomly-selected group of people whose highest level of education is high school. To compare the mean annual salaries of the two groups, the researcher should use a t test for independent sample

10.5. A training coordinator wants to determine the effectiveness of a program that makes extensive use of educational technology when training new employees. She compares the scores of her new employees who completed the training on a nationally-normed test to the mean score of all those in the country who took the same test. The appropriate statistical test the training coordinator should use for her analysis is the t

test for Paired Samples

10.6. As part of the process to develop two parallel forms of a questionnaire, the persons creating the questionnaire may administer both forms to a group of students, and then use a t test for single samples to compare

the mean scores on the two forms.

Circle the correct answer:

10.7. A difference of 4 points between two homogeneous groups is likely to be more/less statistically significant than the same difference (of 4 points) between two heterogeneous groups, when all four groups are taking completing the same survey and have approximately the same number of subjects.

a.

10.8. A difference of 3 points on a 100-item test taken by two groups is likely to be more/less statistically significant than a difference of 3 points on a...