1. Is there a relationship between the prestige of father's occupation and the prestige of respondent's occupation?CorrelationsFATHERSOCCUPATIONALPRESTIGERSOCCUPATIONALPRESTIGESCORESCORE(1980)(1980)Pearson CorrelationFATHERSOCCUPATIONALPRESTIGE SCORE(1980)Sig. (2-tailed)NPearson CorrelationRS OCCUPATIONALPRESTIGE SCORE(1980)Sig. (2-tailed)N**Correlation is significant at the 0.01 level (2-tailed).1758.297.000719.297**.00071911347

Pearson correlation coefficient is an associational statistic.

Answered: 1. Is there a relationship between the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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13
A manager wonders if there is a relationship between customers' class (U1-U4) and their primary visit reason.Based on the Cross-tab analysis result in Table 1, what would you tell to the manager? see attached analysis table
Consider the patients who went to the Urgent Care at the local hospital last week as the observational units (people we are studying) in a statistical study. a) Identify two categorical/qualitative variables that could be recorded on these observational units. b) Identify two numerical/quantitative variables that could be recorded on these observational units. c) State a research question that you could investigate about these observational units, using at least one of the variables that you gave in part a) and b).
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An SAT prep course claims to improve the test score of students. The table below shows the scores for seven students the first two times they took the verbal SAT. Before taking the SAT for the second time, each student took a course to try to improve his or her verbal SAT scores. Do these results support the claim that the SAT prep course improves the students' verbal SAT scores? Let d = (verbal SAT scores prior to taking the prep course)-(verbal SAT scores after taking the prep course). Use a significance level of α = 0.05 for the test. Assume that the verbal SAT scores are normally distributed for the population of students both before and after taking the SAT prep course. Student 1 2 3 4 567 Score on first SAT 380 440 470 490 440 Score on second SAT 420 530 530 550 460 420 410 490 430 Step 1 of 5: State the null and alternative hypotheses for the test. Answer 0 Ho: Md 0 Ha IVA A VI Copy Data Tables Keypad Keyboard Shortcuts
Is the direction of the difference in the number of anagrams solved between the two groups consistent with theory of helplessness?
Provide an example of between subject design and one example of within subject design
14. A total of 12 participants were randomly assigned to one of three treatment groups: antidepressant medication ("drug"), weekly psychotherapy ("therapy”), or no treatment ("control"). Depression scores were collected 8 weeks after treatment began. We want to know how effective the depression treatments were (that is, do the mean depression scores differ between groups?). Drug Drug Drug b) Determine what test to use. Drug Therapy Therapy Therapy Therapy Control Control Control Control a) What are the null and alternative hypotheses? 8 9 14 6 12 7 15 8 22 25 18 20 c) Determine alpha, how many tails are there, what are the df and find a critical value.
An SAT prep course claims to improve the test score of students. The table below shows the scores for seven students the first two times they took the verbal SAT. Before taking the SAT for the second time, each student took a course to try to improve his or her verbal SAT scores. Do these results support the claim that the SAT prep course improves the students' verbal SAT scores? Let d = (verbal SAT scores prior to taking the prep course)-(verbal SAT scores after taking the prep course). Use a significance level of a = 0.01 for the test. Assume that the verbal SAT scores are normally distributed for the population of students both before and after taking the SAT prep course. 1 234567 520 570 540 380 370 490 450 Student Score on first SAT Score on second SAT 540 600 610 470 410 510 480 Step 1 of 5: State the null and alternative hypotheses for the test. Answer 0 Ho: Md 0 Ha Ma IA IV V A || < = Copy Data Tables Keypad Keyboard Shortcuts
2. Do men with more children have higher blood pressure? In a study, blood pressures of men with more than three children were compared with those of men with three or fewer children. Which of the following is true for this study? a) The response variable is blood pressure. O b) The explanatory variable is blood pressure. c) The explanatory variable is number ofchildren ("more than three" vs. "three or fewer"). d) Both a and c ENG
5. Should cell phone use be banned by drivers? 188 people took part in a survey. The answers are classified by the gender of the respondent as below: Agree Disagree Female 68 37 Male 26 46 What is the conditional proportion of females who agree? (a) 0.60 (b) 0,55 (c) 0.45 (d) 0,65 (e) 0.72 6. Refer to the information given in Question 5. What is the marginal proportion of people who agree? (a) 0.72 (b) 0.55 (c) 0.60 (d) 0.45 (e) 0.65 7. Refer to the information given in Question 5. Is there an association between gender and the response given on the survey? (a) Yes, because the proportion of females who agree is higher than the proportion of males who agree. (b) Association here has nothing to do with what proportions of males and females agree. (c) No, because the proportions of females and males who agree are very similar. (d) We need to look at a scatterplot to judge association. (e) Yes, because the…
Prof. Flores, always interested in improving her teaching effectiveness, has decided to undertake a careful analysis of her evaluations from the past three years. A matter of special concern to her is how she is viewed by students of different majors. She's decided to look at the last question on the teacher evaluation form, Question 17, which is, "Would you recommend this professor to another student?" Each of Prof. Flores' students can be placed into one of three categories according to the student's major school, as shown in the contingency table below. (Students who have majors from more than one school are not included.) This table contains a summary of the data that Prof. Flores has collected for 500 of her students. Each of the 500 students is classified according to two variables: major school ("School of Social Science", "School of Engineering", or "School of Physical Sciences") and response to Question 17 ("No", "Maybe", or "Yes"). In the cells of the table are written the…

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