Question: A manufacturer of television sets is interested in the effect on tube conductivity of four different types of coating for color picture tubes. A completely randomized experiment is conducted and the following conductivity data are obtained:

1. Is there a difference in conductivity due to coating type? Use \(\alpha=0.05\)
2. Estimate the overall mean and the treatment effects.
3. Compute a 95 percent confidence interval estimate of the mean of coating type 4. Compute a 99 percent confidence interval estimate of the mean difference between coating types 1 and 4.
4. Test all pairs of means using the Fisher LSD method with \(\alpha=0.05\).
5. Use the graphical method discussed in Section 3.5.3 to compare the means. Which coating type produces the highest conductivity?
6. Assuming that coating type 4 is currently in use, what are your recommendations to the manufacturer? We wish to minimize conductivity.

Price: $2.99

Solution: The downloadable solution consists of 5 pages
Deliverable: Word Document