Find the equation of the least squares line

Reference no: EM131111356

A large proportion of US. teenagers work while attending high school. These heavy workloads often result in underachievement in the classroom and lower grades. A study of high school students in California and Wisconsin showed that those who worked only a few hours per week had the highest grade point averages (Newsweek, Nov. 16, 1992). The following table shows grade point averages (GPAs) and number of hours worked per week for a sample of five students. Consider a simple linear regression relating GPA (y) to hours worked (x).

a. Find the equation of the least squares line.

b. Plot the data and graph the least squares line.

c. Test whether the model is useful for predicting grade point average. Use a = .10.

d. Predict the grade point average of a high school student who works 10 hours per week using a 90% prediction interval. Interpret the result.

Reference no: EM131111356

Questions Cloud

Create an alice world with a character of your choice : Create an Alice world with a character of your choice that will ask the user for a number, cause the character to jump up, use a loop to spin around the number of times specified, and then come back down. Think about how variables will be used as ..

How does the type of carbohydrate impact health : What is meant by the AMDR, and what is this range for carbohydrates? How does the type of carbohydrate impact health? What is one negative health impact from carbohydrate intake?

Interpretation of the triple constraints : First, review the "triple constraints" of IT Project Management as covered in this week's reading "What is Project Management?" Note that there are more than 3 constraints discussed in the article. The illustration above from the article shows the..

When should events be used instead of loops : In general, when should events be used instead of loops in computer programming?

Find the equation of the least squares line : A large proportion of US. teenagers work while attending high school. These heavy workloads often result in underachievement in the classroom and lower grades.

Describe an alice event of the bde format : Describe an Alice event of the BDE format that will make a ballerina jump up when a key is pressed, spin around for as long as the key is held down, and return to the ground when the user lets go of the key.

Quality of the software that we produce : How do we ensure the quality of the software that we produce? How do we successfully institute new software technologies?

Write a one-page report on homer and the iliad : Write a one-page report on Homer and the Iliad. Be sure to include a synopsis of the literary piece.

What wholesale price will mirk labs set : What wholesale price will Mirk Labs set? How much Zatab will it produce and sell annually? How much annual profit does the firm make on Zatab?

User Account

All Pages