Problem 2SE

Refer to Exercise 1.

a. Find a 95% confidence interval for the coefficient of Oxygen.

b. Find a 99% confidence interval for the coefficient of Nitrogen.

c. Find a 98% confidence interval for the coefficient of the interaction term Oxygen · Nitrogen.

d. Can you conclude that β1<− 75? Find the P-value.

e. Can you conclude that β2 > − 1000? Find the P-value.

Leslie Ogu COMM 1041 09/27/2016 - Public Speaking Question of the Day What’s the best kind of pet to have and why Homework ❏ Self concept and comm article ❏ Listening name and topic due by Thursday - email it to me ❏ Movie papers and presentations (Marni, Billy, Hana, Ariel, Victoria, Visha, Sam, Laura, Zoe, Jordan) 3 Things to Consider When Public Speaking ➢ Organization ○ You have to repeat your point numerous times to ensure your audience remembers it ➢ Information ➢ Delivery Organization ➢ Intro ○ 3 Goals ■ Grab audience’s attention ■ Preview what you are going to say ■ Engage them - why does it matter