Given: Coefficient: 0.2776 Standard Error: 1.1421 regressing Average scores on Teachers' Aide a) Construct 90% two-sided...

Given: Coefficient: 0.2776 Standard Error: 1.1421 regressing Average scores on Teachers' Aide

a) Construct 90% two-sided confidence intervals for each parameter.

b) Construct 95% upper and lower one-sided confidence intervals for each parameter.

c) Is there evidence that the presence of teacher aides has an effect on student achievement? You may use a 10% level of significance.

d) Is there evidence that the presence of teacher aides has a positive effect on student achievement? You may use a 5% level of significance.

e) Suppose you learned that a student’s test score is independent of whether a teacher aide is present in their classroom. Would you be surprised? Explain.

Expert Solution

(e) It is quite surprising that a student's test score is independent of whether a teacher aide is present in their classroom. Because practically in real world, presence of teacher aide is very important to understand the subject knowledge.

orchestra answered 2 years ago

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