Question

o. A statistically-minded English teacher wonders if she can predict the lengths of essays that her students random sample of submit on the basis of how large the computer files for the essays are. She selects a 13 student papers (all produced by the same word-processing software) and compares fi kilobytes or KB) to the word count for each. A computer regression analysis of her data is given below. Assume all conditions for inference for slope have been met. Predictor Constant -1450.3 File Size 76.50 28.60 Coef SE Coef 773.4-1.88 0.088 2.67 0.022 S -145.851 R-Sq 39.4% R-Sq (adj ) -33.9 If the teacher uses these data to test the hypotheses Ho:A-0 versus H. β#0 at the u-0.05 level, which of the following is an appropriate conclusion? (a) Since the P-value of 0.022 is less than α, reject H. We have convincing evidence that there is a linear relationship between file size and word count. Since the P-value of 0.022 is less than α, fail to reject Ho, we do not have convincing evidence that there is a linear relationship between file size and word count. 79Since the P-value of0.088 is greater than α, reject Ho, we have convincing evidence that there is a linear relationship between file size and word count. we do not have convincing (d) Since the P-value of 0.088 is greater than α, fail to reject Ho evidence that there is a linear relationship between file size and word count. Since the P-value of0.011 is greater than α, accept Ho we have convincing evidence that the regression line relating word count to file size has a slope of 0. r roft drinks play a significant role in being overweight? A

I'm kinda confused on which to choose can anybody help and explain

Answer 1

Ans:

For file size,

p-value=0.022

alpha=0.05

As the p-value of 0.022 is less than alpha,we reject H₀.

We have convincing evidence that there is a linear relationship between file size and word count.

Option a is correct.