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# Chi-square, Correlation, Multiple Regression

See attached files.

1. A study indicated where different age groups primarily get their news: At the 0.05 level of significance, is there evidence of a significant relationship between the age group and where people primarily get their news? If so, explain the relationship

Use the Chi Square file

Age Group
Media Under 36 36-50 50+
Local TV 107 119 133
National TV 73 102 127
Local newspaper 52 79 107
Internet 95 83 76

2. Using the 'Cumba' database file, create a pivot table of management level versus gender. Then copy the data from the table into a chi square table to see if a relationship exists between employee genders and their management level. What can you conclude at the .05 significance level?

3.Using the 'Cumba' database file, develop a model to predict the employee's salary using the employee's age, years of experience, and gender. Since gender is nominal, use 0 for male and 1 for female. The 'Multiple Regression' file has already been pre-loaded with the data, so you need only interpret the output.

a.State the multiple regression equation.
b. Interpret the meaning of the slopes in the equation.
c. Predict the salary for a 40-year-old male employee with five years' experience.
d. At the .05 level of significance, determine whether each explanatory variable makes a significant contribution to the regression model.
e. Interpret the meaning of the r-squared.
f. Interpret your findings. What changes would you make to the model, given the results?

#### Solution Summary

The solution studies chi-squared analysis. A multiple regression analysis is given.

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