BUSINESS STATS FINAL EXAM STUDY GUIDE /
QUESTIONS WITH 100% CORRECT ANSWERS /
VERIFIED / LATEST UPDATE / GUARANTEED TO
SUCCESS
What type of relationship exists between X and Y if as X increases Y increases? - ANS-Positive
In hypothesis tests about the population correlation coefficient, p, the null hypothesis for a two-tailed
test is - ANS-H0: p = 0
To calculate the critical value of the correlation coefficient one will need to find the critical t statistic
using n - _____, degrees of freedom - ANS-2
What type of relationship exists between X and Y if as X increases Y decreases? - ANS-Negative
What type of linear relationship appears to exist between two variables if F (x,y) = 0.83 - ANS-strong,
positive
In hypothesis tests about the population correlation coefficient, p, the alternative hypothesis for a two-
tailed test is - ANS-H1: p =/ 0
When using a simple regression equation for predicting a response variable, ______ or predicting
outside the range of observed x values, should be approached with caution - ANS-extrapolation
The formula for calculating the two-tailed critical value of r, the sample correlation coefficient is: - ANS-r
critical = t/ sqrt (t^2 + n -2)
With the population linear model: Y = B0 + B1X + EB1 represents the - ANS-slope population parameter
In statistics, a straight-line model of the relationship between two variables, X and Y, is called a - ANS-
simple regression equation
Which of the following sample correlation coefficient shows the strongest association between X and Y?
- ANS--0.95
True or False: Once your data have been plotted on an Excel scatterplot you can fit a regression line to
the points using the Trendline option - ANS-True
QUESTIONS WITH 100% CORRECT ANSWERS /
VERIFIED / LATEST UPDATE / GUARANTEED TO
SUCCESS
What type of relationship exists between X and Y if as X increases Y increases? - ANS-Positive
In hypothesis tests about the population correlation coefficient, p, the null hypothesis for a two-tailed
test is - ANS-H0: p = 0
To calculate the critical value of the correlation coefficient one will need to find the critical t statistic
using n - _____, degrees of freedom - ANS-2
What type of relationship exists between X and Y if as X increases Y decreases? - ANS-Negative
What type of linear relationship appears to exist between two variables if F (x,y) = 0.83 - ANS-strong,
positive
In hypothesis tests about the population correlation coefficient, p, the alternative hypothesis for a two-
tailed test is - ANS-H1: p =/ 0
When using a simple regression equation for predicting a response variable, ______ or predicting
outside the range of observed x values, should be approached with caution - ANS-extrapolation
The formula for calculating the two-tailed critical value of r, the sample correlation coefficient is: - ANS-r
critical = t/ sqrt (t^2 + n -2)
With the population linear model: Y = B0 + B1X + EB1 represents the - ANS-slope population parameter
In statistics, a straight-line model of the relationship between two variables, X and Y, is called a - ANS-
simple regression equation
Which of the following sample correlation coefficient shows the strongest association between X and Y?
- ANS--0.95
True or False: Once your data have been plotted on an Excel scatterplot you can fit a regression line to
the points using the Trendline option - ANS-True
