Question: An economist wants to determine whether average Price/ Earnings (P/E) ratios differ for firm s in three industries. In dependent samples of five firms in each industry show the following results:
a. Construct an ANOVA table.
b. At the 5% significance level, determine whether average P/E ratios differ in the three industries.
c. If differences exist, use Tukey's text at the 5% significance level to determine which industries' mean P/E ratios differ.