Consider the following regression results based on 30 observations. 
= 238.33 - 0.95x + 7.13x2 + 4.76x3;SSE = 3,439 
= 209.56 - 1.03x1 + 5.24(x2 + x3);SSE = 3,559
a.Formulate the hypotheses to determine whether the influences of x2 and x3 differ in explaining y.
b.Calculate the value of the test statistic.
c.At the 5% significance level,find the critical value(s).
d.What is your conclusion to the test?
Definitions:
Operant Conditioning
A behavior adjustment mechanism that operates through the distribution of incentives or the imposition of sanctions.
Systematic Desensitization
A therapy technique used to reduce phobias through gradual exposure to the feared object or situation combined with relaxation exercises.
Systematic Desensitization
A behavioral therapy technique that gradually exposes an individual to an anxiety-producing stimulus while teaching relaxation techniques to overcome the anxiety.
Test Anxiety
A psychological condition in which individuals experience extreme distress and worry in testing situations, often affecting performance.
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