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A statistician wanted to determine if the demographic variables of age, education, and income influence the number of hours of television watched per week. A random sample of 25 adults was selected to estimate the multiple regression model: where y is the number of hours of television watched last week, x1 is the age (in years), x2 is the number of years of education, and x3 is income (in $1,000). The computer output is shown below.
Test the overall validity of the model at the 5% significance level.
What is the test statistic?
F = ______________
______________ Conclude that the model ______________ valid at the 5% level.
Is there sufficient evidence at the 1% significance level to indicate that hours of television watched and age are linearly related?
What is test statistic?
t = ______________
______________ Conclude that there ______________ sufficient evidence at the 1% significance level to indicate that hours of television watched and age are linearly related.
Is there sufficient evidence at the 1% significance level to indicate that hours of television watched and education are negatively linearly related?
What is the test statistic?
t = ______________
______________ Conclude that there ______________ sufficient evidence at the 1% significance level to indicate that hours of television watched and education are negatively linearly related.
What is the coefficient of determination? = ______________
Interpret this value for :
________________________________________________________
Interpret :
________________________________________________________
Interpret :
________________________________________________________
Interpret :
________________________________________________________
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Expenses associated with the upkeep of buildings, equipment, machinery, or vehicles to ensure proper functionality and efficiency.
Machine Hour
A measure of the amount of time a machine is operated, used in calculating manufacturing costs and efficiency.
Total Salaries
The aggregate amount of compensation paid to employees before deductions, such as taxes and retirement fund contributions, are made.
Quality Control Supervisors
Professionals responsible for overseeing the testing of products and materials to ensure they meet predetermined standards and specifications.
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