Question

In tests designed to measure the effect of the concentration in percent of a certain additive on the drying time in hours of paint, the following data were obtained.
a. Compute the least-squares regression line for predicting drying time (y) from concentration (.r).
b. Construct a 95% confidence interval for the slope.
c. Test Ho: β1 = 0 versus H1: β1 < 0. Can you conclude that concentration is useful in predicting drying time? Use the a = 0.05 level of significance.


$1.99
Sales0
Views22
Comments0
  • CreatedOctober 05, 2015
  • Files Included
Post your question
5000