Question

According to GMI Ratings’ 2013 Women on Boards Report, the percentage of women on U. S. boards has increased marginally in 2009– 2012 and now stands at 14%, well below the values for Nordic countries and France. A number of initiatives are underway in an effort to increase the representation. For example, a network of investors, corporate leaders, and other advocates, known as the 30% coalition, is seeking to raise the proportion of female directors to that number (30%) by 2015. This study also reports that 15% of U. S. companies have three or more female board directors. (Data extracted from bit. ly/ 13oSFem.) If you select a random sample of 200 U. S. companies,
a. what is the probability that the sample will have between 12% and 18% U. S. companies that have three or more female board directors?
b. the probability is 90% that the sample percentage of U. S. companies having three or more female board directors will be contained within what symmetrical limits of the population percentage?
c. the probability is 95% that the sample percentage of U. S. companies having three or more female board directors will be contained within what symmetrical limits of the population percentage?


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  • CreatedJuly 16, 2015
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