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[See Solution] A sample of 20 pages was taken without replacement from the 1,591-page phone directory Ameritech Pages Plus Yellow Pages . On each page,

Question: A sample of 20 pages was taken without replacement from the 1,591-page phone directory Ameritech Pages Plus Yellow Pages . On each page, the mean area devoted to display ads was measured (a display ad is a large block of multicolored illustrations, maps, and text). The data (in square millimeters) are shown below:

0 260 356 403 536 0 268 369 428 536
268 396 469 536 162 338 403 536 536 130
  1. Construct a 95 percent confidence interval for the true mean.
  2. Why might normality be an issue here?
  3. What sample size would be needed to obtain an error of ±10 square millimeters with 99 percent confidence?
  4. If this is not a reasonable requirement, suggest one that is.

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


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