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# Confidence Intervals (Limits)

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You are a quality analyst with John and Sons Company. Your company manufactures fax machines, copiers, and printers that use plain paper. The CEO of the company wants the machines to handle 99.5 percent of all the paper that is used in them without the paper getting jammed. The CEO asks you to determine the thickness of paper that the machines must be able to handle to achieve this target. Using the data provided prepare a 6-8 slide PowerPoint presentation directed to the CEO of John and Sons Company detailing your findings. Make sure you include the appropriate confidence limits for the thickness of paper that the machines must be able to handle. Use the notes section in PPT to clarify your talking points. You must use at least one data chart, one additional graphic and three additional resources (one of which may be your text book) in your presentation to support your analysis.

Thickness

0.00385

0.00358

0.00372

0.00418

0.00380

0.00399

0.00424

0.00375

0.00449

0.00422

0.00407

0.00434

0.00381

0.00421

0.00397

0.00425

0.00449

0.00462

0.00467

0.00404

0.00391

0.00431

0.00398

0.00415

##### Solution Summary

A step by step explanation of Confidence Interval (Confidence limits) calculation with the use of a numerical example. An eight slide PowerPoint presentation with graphs illustrating clearly the problem and solution of the confidence intervals calculations both on the standardized normal (large n, ? known) and the t distributions (small n, ? unknown).

##### Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

##### Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.