true and false(why false?)

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10. Circle True or False for each of the questions below.
1. If the null hypothesis states that there is no difference between the mean income of males and the
mean income of females, then the test is one-tailed.
True False
2. If the null hypothesis states that there is no difference between the mean net income retail stores in
Chicago and New York City, then the test is two-tailed.
True False
3. If we are testing for the difference between two population means, it is assumed that the sample
observations from one population are independent of the sample observations from the other
True False
4. The coefficient of determination is the square root of the coefficient of correlation.
True False
5. If the coefficient of correlation is -0.90, the coefficient of determination is -0.81.
True False
6. A scatter diagram is a graph that portrays the correlation between a dependent variable and an
independent variable.
True False
7. An economist is interested in predicting the unemployment rate based on gross domestic product.
Since the economist is interested in predicting unemployment, the independent variable is gross
domestic product.
True False
8. Multiple regression analysis is used when one independent variable is used to predict values of two
or more dependent variables.
True False

Answers (1)

  • rosey87
    Rating:5 stars

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