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A recent CBS News survey reported that 67 percent of adults felt the U.S. Treasury should continue making pennies.
Suppose we select a sample of 15 adults.
a. How many of the 15 would we expect to indicate that the Treasury should continue making pennies? What is the standard deviation?
b. What is the likelihood that exactly 8 adults would indicate the Treasury should con- tinue making pennies?
c. What is the likelihood at least 8 adults would indicate the Treasury should continue making pennies?
Organise the data in appropriate class intervals and draw a histogram of the frequency distribution and find the Mean, Median, Range, Standard Deviation and Coefficient of Variation of the yield for the top 40 Australian companies.
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