The results of a recent poll on the preference of voters regarding the presidential candidates are shown below. 
a.Develop a 90% confidence interval estimate for the difference between the proportion of voters favoring each candidate.
b.Does your confidence interval provide conclusive evidence that one of the candidates is favored more? Explain.
Definitions:
Transfer Price
The price at which divisions of a company transact with each other, such as the trade of supplies or labor between departments.
Operating Income
The profit earned from a firm's normal core business operations, excluding deductions of interest and tax.
Unused Capacity
The portion of a company's resources or assets that remains unutilized or underutilized, not contributing to production or output.
Return on Investment
A measure of the financial gain or loss on an investment relative to the amount of money invested, expressed as a percentage.
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