Page 182 problem #18 A researcher believes nurses are absent from work more frequently when the score higher on a test of "psychological burnout." These are the data: 1. Burnout (X): 2, 1, 2, 3, 4, 4, 7, 7, 8 Absences (Y): 4, 7, 6, 9, 6, 8, 7, 10, 11 2. What is the experimental hypothesis? 3. Is this a one-tailed or two-tailed test? 4. What would the null hypothesis indicate? 5. What is the appropriate statistic? Why? 6. What is the value of alpha? 7. Use social sciences calculator to calculate r. Find the scatterplot, copy and paste the scatterplot here and describe the relationship per the two variables. 8. Write an APA results summary.

Page 182 problem #18 A researcher believes nurses are absent from work more frequently when the score higher on a test of "psychological burnout." These are the data: 1. Burnout (X): 2, 1, 2, 3, 4, 4, 7, 7, 8 Absences (Y): 4, 7, 6, 9, 6, 8, 7, 10, 11 2. What is the experimental hypothesis? 3. Is this a one-tailed or two-tailed test? 4. What would the null hypothesis indicate? 5. What is the appropriate statistic? Why? 6. What is the value of alpha? 7. Use social sciences calculator to calculate r. Find the scatterplot, copy and paste the scatterplot here and describe the relationship per the two variables. 8. Write an APA results summary.

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

See similar textbooks

Similar questions

Question 9 Dr. Jameson wanted to know if IQ scores differed between male and female participants in his study. He gave 28 participants an IQ test and then compared IQ scores for gender differences. He hypothesized that there would be a statistically significant gender difference in IQ scores. Contrary to Dr. Jameson's hypothesis, there were no differences in IQ scores between men and women in his study. From the results of the study, Dr. Jameson must the research hypothesis. the null hypothesis and fail to reject; reject reject; retest reject; fail to reject retest; reject
These two questions please.
Annie conducts a study to examine the differences in stress levels between pet owners and non-pet owners. She conducts a two-tailed test and tells that she rejected the null hypothesis. Therefore, which of these statements is true? Question 8 options: Pet owners have more stress than non-pet owners. Pet owners have less stress than non-pet owners. Pet owners' and non-pet owners' stress levels differ, but it is not known how they differ. Pet owners' and non-pet owners' stress levels do not differ.
The owner of a chain of fruit shakes stores would like to study the correlation between atmospheric temperature and sales during the summer season. A random sample of 12 days is selected with the results given as follows: Day 1 2 3 4 5 6 7 8 9 10 11 12 Temperature in (F) 79 76 78 84 90 83 93 94 97 85 88 82 Total Sales(Units) 147 143 147 168 206 155 192 211 209 187 200 150 Does it appear there is a relationship between atmospheric temperature and sales at .05 level of significance.
It is assumed that standardized test scores should be correlated with students' classroom performance. One would expect that students who consistently perform well in the classroom (on tests, quizzes, etc.) would also perform well on a standardized test scored from 0-100 (with 100 indicating high achievement). A teacher decides to examine this hypothesis. At the end of the academic year, she collects the following data for her (admittedly small) class: Standardized test score Overall GPA 56 1.8 1 73 2.6 2 78 2.9 3 83 2.9 4 85 3.0 5 rows x 2 columns What is your best guess for the expected GPA of a student who scored a 88 on the standardized test? number (rtol=0.01, atol=0.0001) Determine a 95% confidence interval for the expected GPA of a student who scored a 76 on the standardized test. Ib number (rtol=0.01, atol=0.0001) ub number (rtol=0.01, atol=0.0001)
7. Effect size - Cohen's d and r squared An industrial/organizational psychologist has been consulting with a company that runs weekend job-seeking workshops for the unemployed. She collected data on several issues related to these workshops and, after conducting statistical tests, obtained statistically significant findings. She needs to find a way to evaluate effect size so that she can make recommendations to the company. One of the psychologist’s findings is that 18 months after the workshop, a sample of 36 job seekers who received training on resume writing scored an average of 7.3 as measured on a 9-point job-search motivation scale, with a standard deviation of 1.5. The typical job seeker scores 6.1 points. The psychologist finds that the estimated Cohen’s d is , the t statistic is 4.80, and r² is . Using Cohen’s d and Cohen’s guidelines for interpreting the effect size with the estimated Cohen’s d, there is a treatment effect. Using r² and the extension…
Question 3 7 pts An investigator wishes to test the hypothesis that "blondes have more fun." To investigate, he develops the Subjective Report of Fun Scale (high scores indicate more fun), selects 13 brunettes at random and administers the SRFS to them. He then bleaches all 13 subjects' hair blonde, waits two weeks, and administers the SRFS again. Data are below. Do blondes have more fun? Brunettes Blondes 70 47 57 61 65 57 58 58 62 56 52 60 51 50 56 63 73 51 65 60 63 64 66 61 83 71 State the null and alternative hypotheses. (1) Ho: Ha: b) Specify the degrees of freedom. (1) df = c) Calculate the test statistic (3) What type of t-test is this? What was your obtained value of t? d) Given that tcrit for a=.05 is 1.782, what should the researcher conclude? State your conclusions statistically and in terms of the research question. (2) Statistical statement Conclusion in words ThinkCentre No new data to cove Last checked
QUESTION 2 You conduct a study to understand whether happy people are more likely to exercise than sad people. In your sample of happy people. 25 chose to exercise and 10 chose to take a nap. In your sample of sad people, 5 chose to exercise and 35 chose to take a nap. (1) What is the null hypothesis? a. There is a difference in rates of exercise among happy and sad people. b. There is an association in rates of exercise among happy and sad people. c. There is not a difference in rates of exercise among happy and sad people. d. There is not an association in rates of happiness among those who exercise and those who nap. (2) What is the expected frequency for happy people who exercise? (3) What is the expected frequency for sad people who exercise? (4) What is the expected frequency for happy people who nap? (5) What is the expected frequency for sad people who nap? (6) What is your chi-square value? (7) How many degrees of freedom are there? (8) Assuming alpha is equal to .05, what is…
Question 4 Two students in a math class compared their scores on a series of five quizzes: student A student b 4 6 9 5 3 7 8 5 9 6 Considering the concepts of both central tendency and variability, discuss (a) which student tended to perform better on the quizzes (b) which student tended to perform more consistently on quizzes.
5. (10) A recent Gallup Organization Poll asked male and female Americans whether they were pro or pro choice when it comes to abortion issues. The results of the survey are as follows: life Opinion Pro-Life Pro-Choice Gender Men 195 200 Women 240 250 Test whether an individual's opinion regarding abortion is independent of gender at the a = 0.025 level of significance.
Please answer from question 4 - 10 only