Two variables are dependent if changes in the levels of one variable do not affect the levels of the other variable.
Indicate whether the statement is true or false
Q. 2Suppose Pepsi wants to perform a blind taste test to determine if people prefer Pepsi Max or Pepsi One. The following table shows the preferences of a random sample of adults.
Pepsi Max Pepsi Max Pepsi One Pepsi Max Pepsi MaxNo preference Pepsi Max Pepsi One Pepsi One Pepsi MaxPepsi Max Pepsi One Pepsi Max No preference Pepsi MaxThe appropriate nonparametric procedure for this analysis is the _________________ test.A) Wilcoxon rank-sum
B) sign
C) Wilcoxon signed-rank
D) Kruskal-Wallis
Q. 3Using backward elimination regression may result in a model in which none of the independent variables are statistically significant.
Indicate whether the statement is true or false
Q. 4The trend component for a time series with seasonality is found by performing a regression analysis with
A) the actual time series as the dependent variable and the period number as the independent variable.
B) the centered-moving-average as the dependent variable and the period number as the independent variable.
C) the deseasonalized time series as the dependent variable and the period number as the independent variable.
D) the actual time series as the independent variable and the period number as the dependent variable.
Q. 5The chi-square goodness-of-fit test is used to determine if two categorical variables are independent of one another.
Indicate whether the statement is true or false
Q. 6Using forward selection regression will always result in a model in which all of the independent variables are statistically significant.
Indicate whether the statement is true or false
Q. 7A local church has a congregation consisting of 480 adult members. The church's administrators would like to estimate the average weekly donation per member per week.
A random sample of 90 members was found to have an average donation of 56.70 and a standard deviation of 10.50. The 90 confidence interval to estimate the average weekly donation is ________.
A) (49.93, 63.48)
B) (55.04, 58.36)
C) (46.73, 66.67)
D) (44.71, 68.69)
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