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Chapter 14: Q.14.27 (page 562)

Study Time and Score. An instructor at Arizona State University asked a random sample of eight students to record their study times in a beginning calculus course. She then made a table for total hours studied (x)over 2weeks and test score (y)at the end of the 2weeks. Here are the results.

Short Answer

Expert verified

The regression inference assumptions are graphically displayed in the diagram, and they appear to be met.

Step by step solution

01

Given Information

Given data:

02

Explanation

For satisfying regression inference assumptions 1-3, constants 尾0, 尾1, and 蟽are used.

As a result, the test scores of all students in the beginning calculus course who study that amount of hours are normally distributed with mean 尾0+尾1xand standard deviation 蟽for each total number of hours studied (x).

The diagram is presented below.

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