Solution Library

Calculation Of Variance And Estimate Standard Errors

Question Consider the investment behavior of two large corporations, General Electric and Westinghouse. These firms compete against each other and produce many of the same types of products. We might wonder if they have similar investment strategies. Investment data for 20 years for these two corpo ... Read More

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Calculation Of Regression For Estimation Of Sales

Question Data for corporate profits (P) and sales (S) for the manufacturing sector for the period 1970-2005 are stored in file sales.wf1. a. Find least-squares estimates of β1 and β2 in the model P = β1 + β2S + e Report and comment on the estimated equation. b. Draw a histo ... Read More

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SPSS Analysis For 3 Case Studies

Question Read the three case studies below and choose the appropriate statistical procedure. Using the Final Data Set, run the appropriate correlation or regressions procedure, analyze the data, and report the results. Please be sure to include the following elements in your Results: The assump ... Read More

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SPSS Analysis For Average Recall Of Exact Phrases For Men And For Women

Question Use the Christy.SAV data set for these problems. 1. Suppose the researcher wants to ask whether or not the average recall of exact phrases (VERBAL) for men and for women (GENDER) are different. a. What test should the researcher run (be specific)? b. Run the test. Report your test stati ... Read More

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Hypothesis Testing Of GPA Of College Students

Question The average GPA among all college students is estimated to be 2.60. There is reason to believe that students who binge drink have lower GPAs than students that don’t. In a sample of 121 Rutgers-Newark college students identified by their peers as problem drinkers, you find that the m ... Read More

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Hypothesis Testing For Reduced Absenteeism Among Students

Question A prior study of high school students in New Jersey found that among all students, the mean number of days absent during the school year was 4.7. In 2000, the school decided to implement an absentee program in order to reduce the number of student absences. Afterward, school officials rand ... Read More

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Hypothesis Testing Of Youth Spending More Time With Friends

Question A common finding in criminology is that youths who spend a lot of free time in the company of their friends and in the absence of adult supervision are more likely to smoke cigarettes, drink alcohol, and use marijuana. Researchers estimate that the average youth uses these substances at a ... Read More

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Hypothesis Testing Of City Type And Violent Crime Rates

Question The following contingency table provides a joint distribution of city type and violent crime rate. Conduct a Chi-Square test of independence to determine whether city type influences violent crime rates. Use an of .05. Be sure to include all five steps of your hypothesis test. Vio ... Read More

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Hypothesis Testing On Military Service Influencing Drug Use

Question The following contingency table provides a joint distribution of military service and drug use. Conduct a Chi-Square test of independence to determine whether military service influences drug use. Use an of 0.01 and be sure to show all five steps of your hypothesis test. After this, comput ... Read More

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Hypothesis Testing On Gender And Its Influence On Grades

Question The following contingency table provides a joint distribution of gender and grades in school. Conduct a Chi-Square test of independence to determine whether gender influences grades. Use an of .01 and be sure to show all five steps of your hypothesis test. Grades Male &n ... Read More

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Hypothesis Testing On Greater Attached To Friends And Employee Theft

Question You are interested in investigating whether greater attachment to one’s friends reduces employee theft. You draw a random sample of 10 people with high attachment to their friends, and a second random sample of 8 people with low attachment to their friends. You obtain the following d ... Read More

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Hypothesis Testing On Intense Probation Supervision And Success On Probation

Question Does intensity of probation supervision influence success on probation? To answer this question, you take a random sample of 50 probationers on intensive probation, and a second independent random sample of 75 probationers on regular probation. For the intensive probation sample, the mean ... Read More

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