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Author Question: A mail-order company classifies its customers by gender (male/female) and by location of residence ... (Read 110 times)

jazziefee

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on: Jul 24, 2018
A mail-order company classifies its customers by gender (male/female) and by location of residence (urban/suburban). The market research department has determined that 2/3 of their customers are female and that 75 of their customers live in the suburbs. They have also determined that gender and location of residence seem to be independent of one another. Making up the majority of their customers, the females and suburban customers are identified as the focus group for their new ad campaign. If the mail order company will randomly select one of their customers, what is the probability that it will be a suburban customer or a female?

Question 2

Suppose that a confidence interval for a population proportion p is to be calculated. For each confidence level find the appropriate z multiplier. The z multiplier for a 98 confidence interval is
 a. 0.8365
  b. 2.26
  c. 2.33
  d. None of the above


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ladyjames123

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Reply #1 on: Jul 24, 2018
Answer to Question 1

0.9167

Answer to Question 2

C


jazziefee

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Reply #2 on: Jul 24, 2018
Thank you!


ladyjames123

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Reply #3 on: Jul 24, 2018
Always glad to help...


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