Bana 3363 exam 3 - Study guides, Class notes & Summaries

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...

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 Exam Questions with Correct Answers After a state-wide election, the Secretary of State certified that Candidate A won the full election with 56% of the vote when all ballots were counted. What does the number "56%" represent? - Answer-parameter In 2017, the Pew Internet & Life Project conducted web interviews with a sample of 4787 American adults aged 18 and older about online shopping. It was found that 79% of the participants in the survey reported that they shop online at l...

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 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 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...