Bana 3363 - Study guides, Class notes & Summaries

BANA 3363 QUIZ QUESTIONS WITH COMPLETE SOLUTIONS In regression analysis, if the R-squared is 1.0, then: - Answer-the sum of squares for error must be 0.0 If the R-squared is 0.95, this means that 95% of the y values were predicted correctly by the regression line. - Answer-False In the simple linear regression model, the population parameters of the y-intercept and the slope are, respectively, - Answer-β0 and β1 A regression analysis between sales and advertising resulted in the foll...

BANA 3363 SET 2 EXAM QUESTIONS WITH CORRECT ANSWERS UPDATED!!! How does hypothesis testing differ from constructing confidence intervals, in general? Read carefully. - Answer-A hypothesis test examines the evidence in the data for a specified value or "guess" of the parameter chosen by the researcher, while a confidence interval gives a range of "reasonable" values for the parameter based on the data. A researcher wants to study sports-watching behavior of young men. In a random ...

BANA 3363 EXAM 4 QUESTIONS WITH CORRECT ANSWERS In testing the validity of a multiple regression model in which there are four independent variables, the null hypothesis is: - Answer-H 0: β 1 = β 2 = β 3 = β 4 = 0 In a multiple regression model, the value of the R-squared has to fall between - Answer- 0 and +1. In order to test the validity of a multiple regression model involving 5 independent variables and 30 observations, the numerator and denominator degrees of freedom for the cri...

BANA 3363 EXAM 3 WITH COMPLETE SOLUTIONS A chi-squared distribution is symmetric. - Answer-false The number of degrees of freedom for a contingency table with r rows and c columns is: - Answer-( r - 1)( c - 1) To determine the critical values in the chi-squared distribution table, you need to know the: - Answer-degrees of freedom. The only way the chi-squared test statistic can be zero is if the observed frequencies are all exactly the same as the expected frequencies. - Answer-True...

BANA 3363 TEST QUESTONS WITH REVISED AND UPDATED ANSWERS ALL CORRECT A simple random sample of 10 items resulted in a sample mean of 10. The population standard deviation is 5. Round your answers to two decimal places. a. What is the standard error of the mean, ? b. At 95% confidence, what is the margin of error? - Answer-A. 1.58 b. 3.09 A simple random sample of 60 items resulted in a sample mean of 80. The population standard devidation is 15. A. compute the 95% confidence interval f...

BANA 3363 STUDY QUESTIONS WITH CORRECT ANSWERS The standard deviation is calculated by: - Answer-taking the squared root of the variance. Based on a random sample of 50 Ford trucks, statisticians estimated that the average Ford truck on the American roads has a fuel efficiency of somewhere better 15 & 21 miles per gallon. Assuming the sampling was done correctly, this is a good: - Answer- interval estimate of the population mean for the efficiency of Ford When performing a two tail hypo...