Confidence Intervals, statistics homework help

Confidence Intervals, statistics homework help

Week 7

“Confidence Intervals” (Note: Please respond to one [1] of the following two [2] bulleted items)

•The vast majority of the world uses a 95% confidence in building confidence intervals. Give your opinion on why 95% confidence is so commonplace. Justify your response.
OR

•Being able to understand and critically think about statistics presented to you is an important skill in your career. Find a published study of a research subject on which you might need to rely in your expected career which includes a margin of error as part of the report.
•Discuss what the margin of error means as applied to your selected poll or survey and how how that information provides additional information beyond the point estimates reported. Be sure to include the link to your selected survey or poll.

Week 8

“When does one use a one-tailed test or a two tailed test”

•In this week’s Internet Resources, view tab 3. Sal sets up an example of a one-tailed hypothesis test and two-tailed hypothesis test. It is interesting to watch. Now create you own example showing when you would do a one-tailed test and when you would do a two-tailed test.

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