Posted by **Tracy ** on Friday, March 7, 2014 at 6:01pm.

4. A least squares regression line to predict a student’s Stat145 test score (from 0-to-100) from the number of hours studied was determined from a class of 55 Stat145 students: ̂ = 48.2 + 2.21x. One student in the class studied for 18 hours and scored 82 on the exam.

(a) (5 pts.) What is the predicted value of this student’s Stat145 exam score?

(b) (5 pts.) What is the residual for this student?

(c) Explain what the slope of this least squares regression line tells us with regard to the explanatory and response variables. Be specific with regard to the value of the slope

## Answer This Question

## Related Questions

- statistics - Pre study scores versus post-study scores for a class of 120 ...
- statistics - Which data provide the answer to the question: “How frequently can ...
- statistics - Pre- study scores versus post- study scores for a class of 120 ...
- stats - It was thought that students who dressed more neatly received better ...
- Math - The least squares regression line is a unique line for each data set. ...
- problem and statistics - In a random sample of 10 on-line statistics students, ...
- Statistics - In Professor Smith's statistics course, the correlation between ...
- statistics - In a large class, there were 220 students who wrote both the ...
- Stats - Suppose that you are given the following information about the freshman ...
- statistics - A professor is interested in the relationship between the number ...

More Related Questions