Question

Given the confidence interval formula: b plus or minus t*SE sub b

a. What is b?

b. What is t*?

c. What is SE sub b?

Answer 1

@mathslover @Ashleyisakitty

Answer 2

@undeadknight26

Answer 3

b is your point estimate

Answer 4

I'm guessing t is either a t score or a z score. and SE sub b would be your standard error.

Answer 5

thanks! how about this one?
Can a pretest on mathematics skills predict success in a statistics course? The 55 students in an introductory statistics class took a pretest at the beginning of the semester. The least-squares regression line for predicting the score y on the final exam from the pretest score x was The product of 0.82 times x (the pre-test score) + 10.5 predicts the score on the final exam, y. The standard error of b was 0.38. Test the null hypothesis that there is no linear relationship between the pretest score and the score on the final exam against the two-sided alternative.

Answer 6

Hmm. I've never done a hypothesis test involving linear regressions before.

Answer 7

Oh, well thanks for your aid on the previous question!

Answer 8

No problem. Wish I could help you out on this one.