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(See Solution) Families USA, a monthly magazine that discusses issues related to health and health costs, surveyed 20 of its subscribers. It found that the

Question: Families USA, a monthly magazine that discusses issues related to health and health costs, surveyed 20 of its subscribers. It found that the annual health insurance premiums for a family with coverage through an employer averaged $10,979. The standard deviation of the sample was $1,000.

  1. Based on this sample information, develop a 90 percent confidence interval for the
    population mean yearly premium.
  2. How large a sample is needed to find the population mean within $250 at 99 percent

confidence?

Price: $2.99
Solution: The downloadable solution consists of 2 pages
Deliverable: Word Document


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