# Question: The quantity x 2 measures the spread in the

The quantity ∑(x - )2 measures the spread in the x-values. Explain why using x-values that are more spread out will result in a narrower confidence interval for.

## Relevant Questions

Suppose you are planning to buy a car that weighs 3500 pounds, and you have a linear model that predicts gas mileage (y) given the weight of the car (4. Which do you think would be more appropriate, a confidence interval for ...Use the least-squares regression line computed in Exercise 3 to predict the power when the wind speed is 5.0 mph. (The value of the explanatory variable is 53 = 125.) The following table presents the cell means for a two-way ANOVA. Construct and interpret an interaction plot. Why does a large value of the F statistic provide evidence against the null_hypothesis that all the population means are equal? Why doesn't a small value of F statistic provide evidence against Ho? A machine that fills beverage cans is supposed to put 12 ounces of beverage in each can. Following are the amounts measured in a sample of 14 cans. Can you conclude that the median amount differs from 12 ounces? Use the a + ...Post your question