Which of the following is not a required assumption for the analysis of variance?

a. the random variable of interest for each population has a normal probability distribution.
b. populations under consideration have equal means.
c. at least 2 populations are under consideration.
d. the variance associated with the random variable must be the same for all populations.

One of your new suppliers, kim, has been hearing rumors about your firm’s lack of capability to deliver high quality products and writes an email asking you to address the claims being made. in replying to her, you want to be sure that you are very clear and leave no room for misinterpretation. which of the following aspects of effective communication should you give the most attention? (a) making sure you understand kim’s areas of expertise. (b) supporting your reply with relevant data and facts. (c) establishing your credibility as an expert. (d) paying attention to implied communications.