PSYC 3002 WK4Test.docx all test questions with answers 2020 solution Walden University

Document Content and Description Below

PSYC 3002 WK4Test.docx all test questions with answers 2020 solution Walden University • Question 1 2.5 out of 2.5 points One-tailed tests are used when we predict the ___________ of the re... lationship. • Question 2 2.5 out of 2.5 points What does a correlation coefficient do? • Question 3 2.5 out of 2.5 points In a nonlinear relationship, as the X scores increase, the Y scores change • Question 4 2.5 out of 2.5 points In a linear relationship, as the X scores increase, the Y scores change • Question 5 2.5 out of 2.5 points Suppose you are using regression to predict how a child's IQ is impacted by their mother’s IQ. The predictor is ___________ and the criterion is ______________. • Question 6 2.5 out of 2.5 points If we obtain statistically significant results in our analysis, to determine the extent to which the conditions of the independent variable determine dependent scores, we should compute ______________ next. • Question 7 2.5 out of 2.5 points We should do a scatterplot of the data when we compute a correlation because the scatterplot allows us to • Question 8 2.5 out of 2.5 points Suppose we have a 95% confidence interval of 12.23 and 16.75. What does this mean? • Question 9 2.5 out of 2.5 points If the correlation coefficient for X and Y is calculated to be +.47, what is the proportion of variance accounted for? • Question 10 2.5 out of 2.5 points Suppose you tested two age groups on the number of details they could recall from a The mean for the older group is 16, and the mean for the younger group is 14. Furthermore, suppose you fail to reject the null hypothesis for this test. What best accounts for the difference between these sample means? • Question 11 2.5 out of 2.5 points Which of the following requirements is common to both the z-test and the one-sample t-test? • Question 12 2.5 out of 2.5 points Mary finds that, in her classroom, the more time she spends reviewing the course material, the better her students tend to do on exams. Mary has found • Question 13 2.5 out of 2.5 points When using a p value to determine statistical significance for a one-sample t-test • Question 14 0 out of 2.5 points Professor Miller has found a correlation coefficient of -0.69 between a person’s “need for affiliation” (measured by a test to determine the need to be with others) and the number of hours spent watching television. He should conclude • Question 15 2.5 out of 2.5 points Which of the following is not one of the assumptions of the t-test for independent samples? • Question 16 2.5 out of 2.5 points The first 10 students who arrived for the Friday lecture filled out a questionnaire on their attitudes toward the instructor. The first 10 who were late for the lecture were spotted and afterward filled out the same questionnaire. The appropriate design for testing the significance of the difference between the means is • Question 17 2.5 out of 2.5 points A researcher wishes to test the hypothesis that a persuasive message about our government will change people’s attitudes toward politicians. Each of 20 participants’ attitudes is measured before and after receiving the message. The correct procedure to use is: • Question 18 2.5 out of 2.5 points If a researcher reports a one-sample t-test with df = 24, how many individuals participated in this study? • Question 19 2.5 out of 2.5 points Suppose the average reading speed of 15 randomly selected elementary school students is 25, and the average reading speed of 15 randomly selected middle school students is 31. You compute an independent-samples t-test, and your obtained t value is 5.72, which is statistically significant. What is the most appropriate conclusion? • Question 20 2.5 out of 2.5 points What are the consequences of having a restricted range? [Show More]

Last updated: 1 year ago

Preview 1 out of 5 pages