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- Automobile racing, high-performance driving schools, and driver education programs run by automobile clubs continue to grow in popularity. All these activities require the participant to wear a helmet that is certified by the Snell Memorial Foundation, a not-for-profit organization dedicated to research, education, testing, and development of helmet safety standards. Snell "SA" (Sports Application) rated professional helmets are designed for auto racing and provide extreme impact resistance and high fire protection. One of the key factors in selecting a helmet is weight, since lower weight helmets tend to place less stress on the neck. The following data show the weight and price for 18 SA helmets (SoloRacer website). Helmet Weight (oz) Price ($) Pyrotect Pro Airflow 64 245 Pyrotect Pro Airflow Graphics 64 268 RCi Full Face 64 195 RaceQuip RidgeLine 64 190 HJC AR-10 58 309 HJC Si-12 47 705 HJC HX-10 49 897 Impact Racing Super Sport 59 336 Zamp FSA-1 66 194 Zamp RZ-2 58 301 Zamp RZ-2…The International Average Salary Income Database provides a comparison of average salaries for various professions. The data are gathered from publications and reports obtained directly from government agencies (such as the US Bureau of Labor Statistics) or from the International Labour Organization. Suppose an industrial/organizational psychologist is interested in the relationships between job satisfaction, job performance, and job compensation. She has data from five different countries on the average monthly salaries paid to firefighters. She begins her analysis by converting all of the salary data into US dollars: Country Lithuania Germany the United States Australia Austria Country Lithuania Germany the United States Average Monthly Salary(US dollars) $185 Australia Austria $1,895 $2,729 $2,605 $1,134 Standard Deviation (US dollars) $27.80 $473.80 $818.60 z-score for $1,500 Salary $781.60 $283.60 Original Currency litas To appreciate the differences among the countries, she…Refer to the (x-bar) chart in Section 8.2 Exercise 6 of the text.According to this (x-bar) chart, is the process within statistical control? If not, provide a reason why not. a. It does not appear to be within statistical control because at least one point is more extreme than the UCL or LCL. b. It appears to be within statistical control. c. It does not appear to be within statistical control because there is an obvious non-random trend, cycle, or pattern in the points. d. It does not appear to be within statistical control because at least 8 consecutive points are located all above or all below the centerline.
- 1. Do you think Don’s theory is a good example of a theory? Is his hypothesis sound? 2. Is his study an experiment or a correlational study? Why or why not? 3. Do you think Don’s fourth graders would be able to understand and participate in the study and provide informed consent for their participation? 4. Do you think Don’s method will yield reliable results? Why or why not? 5. What do you suppose the students’ parents would think of the study? What will his instructional supervisor think? What do you think?1. Students taking Psychology 001 are required to serve as experimental subjects. Students in Psychology 002 are not required to serve, but they are given extra credit if they do so. Students in Psychology 003 are required either to sign up as subjects or to write a term paper. Based upon what you have learned about data ethics, construct a response of one or two paragraphs with at least three complete sentences in each paragraph on why this scenario is or is not an ethical concern.3
- As suggested in your assigned readings this week, researchers in psychology who are attempting to make a causal claim typically prioritize ________ over ___________ validity. Group of answer choices internal; external internal; statistical external; internal construct; internalNo Treatment Treatment Male 10 20 Overall M = 15 Female 20 30 Overall M = 25 Overall M = 15 Overall M = 25 Which of the following statements is TRUE: A.There is a main effect of gender, a main effect of treatment, and no interaction B.There is a main effect of gender, no main effect of treatment, and an interaction C.There is a main effect of gender, a main effect of treatment, and an interaction4. (a) A study looked into the views of workers towards a government policy of school closures in order to reduce coronavirus transmission. 300 participants from three sectors (hospitality, banking and construction) were interviewed and their responses were classified into three categories, namely positive, neutral and negative. The data are shown below. View Towards School Closure Positive Neutral Negative Total Hospitality Banking Construction 35 25 40 100 28 47 25 100 38 22 40 100 Total 101 94 105 300 i. Based on the data in the table, and without conducting a significance test, describe the differences of views across the different sectors. ii. Calculate the x? statistic and use it to test for independence, using a 5% significance level. What do you conclude? (b) i. Describe what selection bias is and when it may occur. Give an example. ii. You have been asked to design a nationwide survey in your country to find out about working conditions among employees in the postal offices.…
- Management of a major company has made the following assumptions regarding their consumer profile. Over 60% of all shoppers are women Less than 40% of our customer primarily make purchases through online resources The average age of the purchasers of product B is below 45 years. The average weekly purchase of the top selling product A exceeds $50. The company hired market researchers to determine the validity of their consumers' demographic assumptions. The researchers conducted survey and focus groups to evaluate the purchasing pattern of the company's current consumers. In a survey of 400 consumers, 252 respondents were women and 148yrespondents indicated they purchase the company's products online. The average age of the respondents was 44 years with standard deviation of 10 years. The average weekly purchase of top selling products A and B by the respondents were $52 with standard deviation of $10.5 and $60 with standard deviation of $22.0 respectively. Determine which of the…1. What is the independent variable? How is it operationally defined? 2. What type of variable is the independent variable (situational, response, participant, or mediating)? 3. What is the dependent variable? How is it operationally defined? 4. What type of variable is the dependent variable (situational, response, participant, or mediating)? 5. Is it a nonexperimental or experimental design? Why? For each of the kinds of validity below, what concerns about that type of validity do you have with this study? If you don’t have any concerns about that kind of validity, then explain why you think the study does a good job addressing it. If you would need additional information to evaluate that kind of validity, specify what you would need to know. A. Construct validity B. Internal validity C. External validity D. Statistical conclusion validityAutomobile racing, high-performance driving schools, and driver education programs run by automobile clubs continue to grow in popularity. All these activities require the participant to wear a helmet that is certified by the Snell Memorial Foundation, a not-for-profit organization dedicated to research, education, testing, and development of helmet safety standards. Snell “SA” (Sports Application) rated professional helmets are designed for auto racing and provide extreme impact resistance and high fire protection. One of the key factors in selecting a helmet is weight, since lower weight helmets tend to place less stress on the neck. The following data show the weight and price for 18 SA helmets (SoloRacer website). Helmet Weight (oz) Price ($) Pyrotect Pro Airflow 64 239 Pyrotect Pro Airflow Graphics 64 277 RCi Full Face 64 201 RaceQuip RidgeLine 64 203 HJC AR-10 58 291 HJC Si-12 47 699 HJC HX-10 49 890 Impact Racing Super Sport 59 346 Zamp FSA-1 66 202 Zamp…