Information regarding random samples of annual salaries (in thousands of dollars)of doctors in three different specialties is shown below.
a.Compute the overall mean.
b.State the null and alternative hypotheses to be tested.
c.Show the complete ANOVA table for this test including the test statistic.
d.The null hypothesis is to be tested at 95% confidence.Determine the critical value for this test.What do you conclude?
e.Determine the p-value and use it for the test.
Definitions:
Reject
In statistical hypothesis testing, the process of dismissing the null hypothesis based on the evidence from the data analysis.
H0
The null hypothesis in statistical analysis that indicates no significant difference or effect.
Simple Effect
The effect of one factor at a particular level of another factor in a factorial design experiment.
Interaction Effect
The phenomenon where the effect of one independent variable on the dependent variable differs depending on the level of another independent variable.
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