Percent confidence interval for the true mean

Reference no: EM1394401

A sample of 20 pages was taken without replacement from the 1,591-page phone director 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

(a) Construct a 95 percent confidence interval for the true mean.

(b) Why might normality be an issue here?

(d) If this is not a reasonable requirement, suggest one that is.

Reference no: EM1394401

Questions Cloud

Research process and modern business world : Albert Einstein stated, "The formulation of a problem is far more often essential than its solution, which may be merely a matter of mathematical or experimental skill.

Has john violated the foreign corrupt practices act : John is a sales associate for Neptune Cyber Solutions, a manufacturer of medium sized Computer operating systems. John is overseas in the nation of Megalopia hoping to secure a contract with a large manufacturing organization.

Confidence interval for the proportion of all kernels : Biting an unpopped kernel of popcorn hurts! As an experiment, a self-confessed connoisseur of cheap popcorn carefully counted 773 kernels and put them in a popper. After popping, the unpopped kernels were counted. There were 86. a) Construct a 90 ..

Economic effects of arrangement : Select one regional trading arrangement and describe three economic effects of the arrangement

Percent confidence interval for the true mean : Construct a 95 percent confidence interval for the true mean.

How nutrigenomics overcome free radical damage : How we can use nutrigenomics to overcome free radical damage in DNA in order to prevent a biological system against to cancer?

Estimating the proportion of families : In order to estimate the proportion of families who prefer female baby-sitters to male baby-sitters with an error of at most 8 percentage points and with at least 95 percent confidence, how large a sample should be taken?

Discuss the relative amounts of fluids lost : Ralph was born without sweat glands. Will this have a significant effect on his ability to maintain normal water balance?

Explain different kinds of information found lesson plan : Describe lesson plan. Explain the different kinds of information found in detailed lesson plan. In your discussion, include a design document and its usefulness.

User Account

All Pages