awalyend test scores froms STAT 341 this semester. The score on exam 2 was e sco
ID: 3322918 • Letter: A
Question
awalyend test scores froms STAT 341 this semester. The score on exam 2 was e score on exam I is a predictor (a), and whether the student picked up another predictor (zz), an indicator variable (0 or 1, where 1 indicates L. Dr. Cooley ressponse (v), his/her exam 2 was the the student did NOT pick up his/her exam). The first few lines of data are given below. Exam PickUp ExaIn2 79 60 64 64 Dr. Cooley fit three different possible models (lmi, 1a2, 1a3) using the commands below. After comparing the three models Dr. Cooley decided that the third model (1a3) best met his purposes. Summary info for this model is given below. la2Explanation / Answer
(a)
a slope associated with Exam1 for students who picked up their exam1 is 0.90250. it remains same for students who don't pick up their exam. since both the variable are independent variables.
(b)
No, if Dr. cooley's decision was based on AIC then it may model1 as criterion using AIC is the lower the AIC better the model.and Dr. chooses model 3 then it doesn't base on AIC.
(c)
a coefficient for the main effect of pick up and interaction effect of it. both the have significant p-value on the base of model prediction it does not have a significant impact on the model. but on the base of data that 58 who pick up exam1 and 18 who doesn't then number easily shows that it has a significant difference impact on the model.
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