The following table shows students’ test scores on the first two tests in an introductory statistics class. Statistics Test Scores First test, x 89 88 84 52 49 50 87 75 87 41 45 63 Second test, y 85 85 68 57 49 52 82 73 85 35 41 69Copy Data Step 1 of 2: Find an equation of the least-squares regression line. Round your answer to three decimal places, if necessary. Step 2 of 2: If a student scored a 6969 on his first test, make a prediction for his score on the second test. Assume the regression equation is appropriate for prediction. Round your answer to two decimal places, if necessary.
The following table shows students’ test scores on the first two tests in an introductory statistics class. Statistics Test Scores First test, x 89 88 84 52 49 50 87 75 87 41 45 63 Second test, y 85 85 68 57 49 52 82 73 85 35 41 69Copy Data Step 1 of 2: Find an equation of the least-squares regression line. Round your answer to three decimal places, if necessary. Step 2 of 2: If a student scored a 6969 on his first test, make a prediction for his score on the second test. Assume the regression equation is appropriate for prediction. Round your answer to two decimal places, if necessary.
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter1: Functions
Section1.EA: Extended Application Using Extrapolation To Predict Life Expectancy
Problem 2EA
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Question
The following table shows students’ test scores on the first two tests in an introductory statistics class.
Statistics Test Scores
Copy Data
Statistics Test Scores
| First test, x | 89 | 88 | 84 | 52 | 49 | 50 | 87 | 75 | 87 | 41 | 45 | 63 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Second test, y | 85 | 85 | 68 | 57 | 49 | 52 | 82 | 73 | 85 | 35 | 41 | 69 |
Step 1 of 2:
Find an equation of the least-squares regression line. Round your answer to three decimal places, if necessary.
Step 2 of 2:
If a student scored a 6969 on his first test, make a prediction for his score on the second test. Assume the regression equation is appropriate for prediction. Round your answer to two decimal places, if necessary.
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