Can someone please help me solve these Questions..
Like what is the question ? Chi-square ? 2-proportion.. and how should I solve it.. on Excel and Megastat
The information needed is provided in this file: http://www.2shared.com/file/65VvfpnX/Company_Profiles__1_.html

1A) Is there a significant difference between the companies traded on Germany and French markets regarding return on investments?

B) Is there a difference between the companies traded on Germany and French markets regarding dividend yield?

2)According to history data, shares of the four markets are distributed as follow: Germany had 25% of the total market share, France had 40% of the market share, Ireland had 15 % of the market share, and South Africa had a market share of 20%. Does the data suggest any changes have occurred in the distribution of market shares of the four markets?

I know this one is on chi-square but how do I solve it ? What is the rule to solve this question?