Question

The topic of global warming increasingly appears in the news. It has the potential to impact companies' operations through changes in governmental regulations, new reporting requirements, necessary operational changes , and so on. The Institute of Management Accountants (IMA) conducted a survey of senior finance professionals to gauge members' thoughts on global warming and its impact on their companies. The survey found that 65% of senior finance professionals believe that global warming is having a significant impact on the environment.

Suppose that you select a sample of 100 senior finance professionals.

a.) What is the probability that the sample percentage indicating global warming is having a significant impact on the environment will be between 64% and 69%

b.) The probability is 90% that the sample percentage will be contained within what symmetrical limits od the population percentage?

c.) The probability is 95% that the sample percentage will be contained within what symmetrical limits of the population percentage?

d.) Suppose you selected a sample of 400 senior finance professionals. How does this change your answers in a-c?

Answer 1