A study of homeowners in the 5th congressional district in Maryland found that their annual household incomes are normally distributed with a mean of $41,182 and a standard deviation of $11,990 (based on data from Nielsen Media Research). a. What percentage of household incomes are greater than $30,000?b. What percentage of household incomes are between $25,000 and $40,000?c. If an advertising campaign is to be targeted at those whose household incomes are in the top 20%, find the minimum income level for this target group?
A study of homeowners in the 5th congressional district in Maryland found that their annual household incomes are normally distributed with a mean of $41,182 and a standard deviation of $11,990 (based on data from Nielsen Media Research). a. What percentage of household incomes are greater than $30,000?b. What percentage of household incomes are between $25,000 and $40,000?c. If an advertising campaign is to be targeted at those whose household incomes are in the top 20%, find the minimum income level for this target group?
Essentials of Business Analytics (MindTap Course List)
2nd Edition
ISBN:9781305627734
Author:Jeffrey D. Camm, James J. Cochran, Michael J. Fry, Jeffrey W. Ohlmann, David R. Anderson
Publisher:Jeffrey D. Camm, James J. Cochran, Michael J. Fry, Jeffrey W. Ohlmann, David R. Anderson
Chapter6: Statistical Inference
Section: Chapter Questions
Problem 27P: Duke Energy reported that the cost of electricity for an efficient home in a particular neighborhood...
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A study of homeowners in the 5th congressional district in Maryland found that their annual household incomes are
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