Refer to grade point average problems 1.19 and 8.16.a. fit regression model [8.49) and state the estimated regression function. b. test whether the interaction term can be dropped from the model: use a = .05. state the alternatives, decision rule. andconclusion. if the interaction term cannot be dropped from the model, describe the nature of the interaction effect

step-by-step explanation:

the options are kind of confusing. i can tell you what i see going on here when i look at the graph.

the class and exam medians are closely related, and it looks like the low outlier on the exam did pull the median lower. [tex][/tex]

1/3 + 1/3 ≠ 2/6 because 1/3 alone = 2/6  

step by step explanation:

1/3 + 1/3 = 2/3       2/3=4/6

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step-by-step explanation: