# Question: Study Time and Score Refer to Exercise 14 55 99 Procedure

Study Time and Score. Refer to Exercise 14.55; 99%.

Procedure 14.2

Regression t-Interval Procedure

Purpose To find a confidence interval for the slope, β1, of the population regression line

Assumptions The four assumptions for regression inferences

Step 1: For a confidence level of 1 − α, use Table IV to find tα/2 with df = n − 2.

Step 2: The endpoints of the confidence interval for β1 are

β1 ± tα/2 .se/√Sxx

Step 3: Interpret the confidence interval.

Procedure 14.2

Regression t-Interval Procedure

Purpose To find a confidence interval for the slope, β1, of the population regression line

Assumptions The four assumptions for regression inferences

Step 1: For a confidence level of 1 − α, use Table IV to find tα/2 with df = n − 2.

Step 2: The endpoints of the confidence interval for β1 are

β1 ± tα/2 .se/√Sxx

Step 3: Interpret the confidence interval.

## Relevant Questions

The data from Exercise 14.30 for number of birdies during a tournament and final score for 63 women golfers are on the WeissStats CD. a. Decide whether you can reasonably apply the regression t-test. If so, then also do ... Use the data on the WeissStats CD for estriol levels of pregnant women and birth weights of their children referred to in Exercise 14.38. a. Decide whether you can reasonably apply the regression t-test. If so, then also ...x = 3 a. Determine a point estimate for the conditional mean of the response variable corresponding to the specified value of the predictor variable. b. Find a 95% confidence interval for the conditional mean of the ...The data from Exercise for number of birdies during a tournament and final score of 63 women golfers are on the WeissStats CD. Specified value of the predictor variable: 12 birdies. Use the technology of your choice to do ...Refer to the confidence interval and prediction interval formulas in Procedures 14.3 and 14.4, respectively. a. Explain why, for a fixed confidence level, the margin of error for the estimate of the conditional mean of the ...Post your question