In Exercises, presume that the assumptions for regression inferences are met.Study Time and Score. Following are the data on total hours studied over 2 weeks and test score at the end of the 2 weeks from Exercise. x 10 15 12 20 8 16 14 22 y 92 81 84 74 85 80 84 80 a. Determine a point estimate for the mean test score of all beginning calculus students who study for 15 hours.b. Find a 99% confidence interval for the mean test score of all beginning calculus students who study for 15 hours.c. Find the predicted test score of a beginning calculus student who studies for 15 hours.d. Determine a 99% prediction interval for the test score of a beginning calculus student who studies for 15 hours.ExerciseApplying the Concepts and SkillsIn Exercises, we repeat the information from Exercises. For each exercise here, discuss what satisfying Assumptions 1–3 for regression inferences by the variables under consideration would mean.
In Exercises, presume that the assumptions for regression inferences are met.
Study Time and Score. Following are the data on total hours studied over 2 weeks and test score at the end of the 2 weeks from Exercise.
| x | 10 | 15 | 12 | 20 | 8 | 16 | 14 | 22 |
| y | 92 | 81 | 84 | 74 | 85 | 80 | 84 | 80 |
a. Determine a point estimate for the mean test score of all beginning calculus students who study for 15 hours.
b. Find a 99% confidence interval for the mean test score of all beginning calculus students who study for 15 hours.
c. Find the predicted test score of a beginning calculus student who studies for 15 hours.
d. Determine a 99% prediction interval for the test score of a beginning calculus student who studies for 15 hours.
Exercise
Applying the Concepts and Skills
In Exercises, we repeat the information from Exercises. For each exercise here, discuss what satisfying Assumptions 1–3 for regression inferences by the variables under consideration would mean.
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 5 images
