Bana 336 - Study guides, Class notes & Summaries

BANA 3363 EXAM 4 QUESTIONS WITH CORRECT ANSWERS A regression analysis between weight (y in pounds) and height (x in inches) resulted in the following least squares line: ŷ = 135 + 6 x . This implies that if the height is increased by 10 inches, the weight is expected to increase by an average of 195 pounds. - Answer-False A simple linear regression equation is given by y ̂ = 5.25 + 3.8x. The point estimate of y when x= 4 is 20.45. - Answer-True A regression analysis between sales (in $...

BANA 3363 Test Questions with Correct Answers Case Problem: Young Professional Magazine Young Professional magazine was developed for a target audience of recent college graduates who are in their first 10 years of a business or other professional career. The magazine has been fairly successful and the publisher is interested in expanding the publication's advertising base. As a recent hire into the marketing department at the magazine, you have been asked to help develop a survey asking read...

BANA 3363 Study Questions with Correct Answers As the sample size increases: - Answer-the standard error of the mean decreases. Inferential statistics can estimate: - Answer-the population mean, based on the sample mean. The standard deviation is a measure describing: - Answer-the variability of data. If sampling is done correctly, the mean of sampling distribution is: - Answer-always equal to the population mean. The margin of error for a confidence interval is larger if: - Answer-...

BANA 3363 EXAM 3 WITH COMPLETE SOLUTIONS A chi-squared test of a contingency table is applied to a contingency table with 4 rows and 4 columns for two categorical variables. The degrees of freedom for this test must be 9. - Answer-True In a test of a contingency table, rejecting the null hypothesis concludes the variables are not independent. - Answer-True The sampling distribution of the test statistic for a goodness-of-fit test with k categories is a: - Answer-chi-squared distribution w...

BANA 3363 Study Questions with Correct Answers As the sample size increases: - Answer-the standard error of the mean decreases. Inferential statistics can estimate: - Answer-the population mean, based on the sample mean. The standard deviation is a measure describing: - Answer-the variability of data. If sampling is done correctly, the mean of sampling distribution is: - Answer-always equal to the population mean. The margin of error for a confidence interval is larger if: - Answe...

BANA 336 EXAM QUESTIONS WITH ALL CORRECT ANSWERS GRADED A+ A poll is to be conducted a few weeks before a state election to determine which of two candidates running for governor has greater support. The polling organization will randomly select 500 registered voters in the state to poll. It will record each person's response in a variable called "Preference," with possible values of {Candidate A, Candidate B, Other}. What is the population of interest? RESPONSE: The purpose of th...

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...