Lucy Baker Is Analyzing Demographic Characteristics of Two Television Programs $\bar { x }$

question 11

Multiple Choice

Lucy Baker is analyzing demographic characteristics of two television programs, American Idol (population 1) and 60 Minutes (population 2) .Previous studies indicate no difference in the ages of the two audiences.(The mean age of each audience is the same.) Her staff randomly selected 100 people from each audience, and reported the following: $\bar { x }$ ₁ = 43 years and $\bar { x }$ ₂ = 45 years.Assume that $\sigma$ ₁ = 5 and $\sigma$ ₂ = 8.With a two-tail test and $\alpha$ = .05, the critical z values are _________________.

• A)-1.64 and 1.64
• B)-1.96 and 1.96
• C)-2.33 and 2.33
• D)-2.58 and 2.58
• E)-2.97 and 2.97

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Tables that provide the factors required to calculate the present value of future cash flows or income.

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Present Value Table

A table used to determine the present value of a cash flow or series of cash flows to be received in the future, based on a certain discount rate.

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