Sophie's thesis study is focused on participants' retrospective accounts about happy and sad events in their lives, as well as current events identified as happy and sad. One way in which Sophie plans to control for retrospective bias in the participants' current experiences is to have these participants: O obtain baseline data O include pretest and posttest measures O stay in the study, even if they verbalize they want to drop out O keep a behavior diary
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- A research conducts a study to identify the relationship between variable A and Variable B. The data collected from a random sample is presented in Table 2 Subject Dependent Variable Independent Variable (variable A) (variable B) 1 23.5 19.6 2 21.5 24.7 3 17.5 16.9 4 45.6 22.1 32.1 26.4 6 61.0 55.2 7 15.9 21.5 8 22.6 77.2 9. 34.5 35.8 10 22.1 23.9 11 26.4 23.7 12 23.5 24.2 13 59.9 60.5 14 45.7 46.0 15 43.2 44.1 16 28.4 29.3 17 54.8 55.9 18 37.4 23.5 19 42.3 59.9 20 32.1 45.7 a. What is the suitable correlation test for analyzing the data? b. Analyze the data by using the calculation method. What percentage of the variance in variable A is influenced by Variable B? Explain your answer. c. Report the results of the analysisA researcher is interested in examining the relationship between ACT scores and college GPA. Participant ACT ?̅ = 29.67; ?? = 3.39 GPA ?̅ = 3.30; ?? = .52 1 24 2.75 2 28 3.25 3 29 3.50 4 35 3.75 5 34 4.00 6 30 3.80 7 29 2.60 8 27 2.68 9 31 3.36 Predict the GPA from an ACT score of 22. Predict the GPA from an ACT score of 25. Find the standard error of the estimate. What does this tell you about your predictions?The GHQ is a well-known instrument for measuring minor psychological distress. The scale asks whether the respondent has experienced a particular symptom or behavior recently. Higher scores are associated with worst mental health. Past research has demonstrated that being of lower socioeconomic status was also associated with poorer mental health. The data are below: Participant Financial Security GHQ 1 20 25 2 18 23 3 18 17 4 19 35 5 19 18 6 18 24 7 19 24 8 14 25 9 10 27 10 7 50 i just need help on the blanks in the picture thankyou
- A graduate student is interested in how viewing different types of scenes affects working memory. For his study, he selects a random sample of 36 adults. The subjects complete a series of working memory tests before and after walking in an urban setting. Before the walk, the mean score on the test of working memory was 9.1. After the walk, the mean score was 1.4 higher. The graduate student has no presupposed assumptions about how viewing different types of scenes affects working memory, so he formulates the null and alternative hypotheses as: H00 : μDD = 0 H11 : μDD ≠ 0 Assume that the data satisfy all of the required assumptions for a repeated-measures t test. The graduate student calculates the following statistics for his hypothesis test: Mean difference (MDD) 1.4 Estimated population standard deviation of the differences (s) 1.6 Estimated standard error of the mean differences (sMDMD) 0.2667 Degrees of freedom (df) 35 The t statistic 5.25 The critical values of t…A warehouse manager wants to know if there is an association between the shift worked and being on time for work. To investigate, he selects a random sample of 70 workers and classifies each one according to the shift they worked most recently and whether they were on time for work. He was unable to classify a substantial number of people as being on time, so he classified those individuals as unknown. The data are displayed in the table. The manager would like to know if these data provide convincing evidence of an association between the shift worked and being on time in the large population of all workers at this warehouse. The random and 10% conditions are met. Is the Large Counts condition met? Yes, the smallest expected count is 5, so all expected counts are at least 5. Yes, the smallest expected count is 8.54, so all expected counts are at least 5. No, the smallest expected count is 2.56, so the expected counts are not all at least 5. No, the smallest expected count is…A survey was conducted to determine whether hours of sleep per night are independent of age. A sample of individuals was asked to indicate the number of hours of sleep per night with categorical options: fewer than 6 hours, 6 to 6.9 hours, 7 to 7.9 hours, and 8 hours or more. Later in the survey, the individuals were asked to indicate their age with categorical options: age 39 or younger and age 40 or older. Sample data follow. Hours of Sleep Age Group 39 or younger 40 or older Fewer than 6 40 38 6 to 6.9 60 57 7 to 7.9 77 75 8 or more 63 90 (a) Conduct a test of independence to determine whether hours of sleep are independent of age. State the null and alternative hypotheses. H0: Hours of sleep per night is not independent of age.Ha: Hours of sleep per night is independent of age. H0: Hours of sleep per night is independent of age.Ha: Hours of sleep per night is not independent of age. H0: The proportion of people who get 8 or more hours of sleep per…
- In an interview for a job, the interviewer says that the average annual income of the company's 16 employees is $73,610. The actual annual incomes of the 16 employees are shown below. Which measure of central tendency would be most informative to the potential employee? OOO O O median O mode O mean Orange $12,500 $12,500 $16,430 $17,305 $17,408 $18,980 $20,432 $24,540 $25,676 $28,906 $28,956 $32,654 $94,024 $98,213 $250,921 $478,320According to the Romanian University for Dental Hygiene , 70% of adults believe that an unattractive smile hurts career success. Suppose that 25 adults are randomly selected. What is the expected number of adults who believe that an unattractive smile hurts career success? ( Round the final answer to two decimal places ) 2 . What is the probability that 15 or more believe an unattractive smile hurts career success? ( Round the final answer to four decimal places )Which of the following is true about assessing affective constructs such as leadership, attitudes, and sportsmanship? Group of answer choices affective constructs are difficult to assess because of their subjective nature. Affective constructs are an important part of the physical education curriculum Affective constructs should be both taught and assessed in a reliable and valid manner All of the above are true.
- You want to examine the relationship between dropping out of high school and delinquency. You have a random sample of 11 students. You have the number of delinquent offenses that each student reported committing in the year before and after dropping out of school. The following table shows the data. Before dropping After dropping Student out out 1 7 2 9. 2 3 4 7 7 8 11 6 11 13 7 8 4 8 8 10 9. 5 7 10 2 1 11 3 From performing a hypothesis test to determine if the mean number of delinquent differs after dropping out, what is the p-value? (Round off to two decimal places if necessary)Store Window Creativity and Shopper Behavior. Do more creative store-window displays affect shopper behavior? Six main-street retailers selling everyday fashion items were used in the study. Pretests with shoppers showed the six stores to be comparable on brands and consumer perceptions of value for the money. Three of the retailers had more creative windows, in terms of displaying items in a more innovative and artistic manner versus the less creative windows, which had a more concrete focus on the items on display. All display windows were of similar dimensions. Observers, in close proximity but out of sight of shoppers, watched their behavior as they passed the display windows, and for each shopper the observers recorded whether the shopper looked at the window or entered the store. A total of 863 shoppers passed the more creative windows and 971 passed the less creative windows. The study found that a higher percentage of shoppers looked at and entered the stores with the more…