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A researcher would like to test whether political attitudes of college freshmen differ from those of college seniors. Samples of 40 freshmen and 40 seniors are obtained, and each student is given a questionnaire measuring political attitude on the scale of 0 (very conservative) to 100 (very liberal). The average score for the freshmen is 52 with a standard deviation of 6, and the seniors average 39 with a standard deviation of 6.9. Select the appropriate hypothesis test(s). a. independent measures t-test b. repeated measures t-test c. two-way ANOVA d. one-way ANOVA |
Answer:
a. independent measures t-test
Explanation:
We are given that the both samples are not related and both samples are independent samples. We have to compare the means for these two groups. So, we need to use the two sample or independent measures t-test for the difference between the two population means.
A researcher would like to test whether political attitudes of college freshmen differ from those of...
Question 13 A major company would like to assess the impact of using a professional trainer to conduct a confidence-building workshop with their salespeople. A sample of 16 workers is obtained. Half (n = 8) are randomly assigned to attend the workshop and the other half (n = 8) serves as a control group. Two weeks later, each of the participants is given a questionnaire measuring the level of self-confidence. Please choose the statistical test that is most appropriate for...
The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures the motivation, attitude, and study habits of college students. Scores range from0 to 200 and follow (approximately) a Normal distribution with mean 113 and standard deviation 16. You suspect that incoming freshmen at your school have a mean m thatis different from 113 because they are often excited yet anxious about entering college. You give the SSHA to 23 incoming freshmen and find their mean score...
I. A researcher is interested in the impact of mace ethnicity on attitudes towards the death penalty, Conduct a chi-square best to examine whether t estoward the death penalty vary across race. Black White Hispanic Total A State the mall and research hypotheses ning ene 25 B Conduct the chi e st Calculate the expected frequencies and the chi Decherche d your des offre ada 1skola fase M a dec i ne To credit for this to you all Expected...
1 A researcher wants to find out which type of classroom instruction significantly improves students’ test performance. He designed four types of instruction for four samples of students. Later all four samples were given the same test and their average performance was compared. What statistical test should be used by the researcher to analyze the results of this study? A. Pearson correlation B. t-test for independent groups C. one-factor Anova for between groups D. Chi2 for Independence 2 A researcher...
TEST 1: ANSWERS INTS EACH). This section takes around 5 minutes. Name Spring 2019 8) A researcher wants to determine whether female teachers give higher or lower grades, on average, then male teachers. She picks a random sample by picking a random sample of schools, in the schools picked, picking a random sample of departments, and in the departments picked, picking a random sample of teachers. What kind of sampling was performed? d) voluntary response e) cluster b) stratified Random...
Future Time Orientation and Condom Use for AIDS
Prevention
Background Notes: Researchers administered questionnaires to
male college students taking an introductory psychology course.
Among other things, they measured future time orientation defined
as planning ahead for future events and willingness to delay
gratification. (Sample item: “I believe that a person’s day should
be planned ahead.”) Based on the scores on the future time
orientation scale, they split the male students into two groups –
one low in future orientation and...