The MSCI 2016 Survey of Women on Boards Survey showed that there continues to be a slow increase in the overall percentage of women on boards globally. The study reported that 69 of 70 (99%) French companies sampled, 39 of 53 (74%) German companies sampled, 8 of 22 (36%) Irish companies, 15 of 24 (63%) Spanish companies, and 12 of 42 (29%) Swiss companies sampled have at least three female directors on their boards.
Source: Data extracted from “The Tipping Point: Women on Boards and Financial Performance,” bit.ly/2pYDt9A.

a. Is there evidence of a significant difference among the countries with respect to the proportion of companies who have at least three female directors on their boards? (Use α = 0.05).

b. Determine the p-value and interpret its meaning.

c. If appropriate, use the Marascuilo procedure and α = 0.05 to determine which groups differ.