3 math discussions

1. Confidence Intervals

Being able to understand and critically think about statistics presented to you is an important skill in your career. Find a published poll or survey (pollingreport.com is a great place to look) 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 that information provides additional information beyond the point estimates reported.
Next, select one of the percentages from the poll and construct the confidence interval for that percentage. HINT: this is for a proportion and since the margin of error is included with the poll, you do not have to calculate it to find the confidence interval. Explain what the confidence interval for that percentage (proportion) means. Be sure to include the link to your selected survey or poll.

Confidence Intervals

PollingReport.com. A nonpartisan resource on trends in American public opinion.

2. Accept the null hypothesis, or fail to reject it?

Read this article, then respond to one [1] of the following two [2] bulleted items.

  • Debate if “failing to reject the null” is the same as “accepting the null.” Support your position with examples of acceptance or rejection of the null.
  • Take a position on this statement: In setting up a hypothesis test, the claim should ideally be written in the alternative hypothesis.

I’m doing a review of basic statistics since I’ll be helping undergrad students, in one-on-one consultation and teaching labs, understand math and stats concepts introduced in their cla…


Regression in Business

Regression is one of the concepts and tools in this course which is most commonly used in careers. Regression is often used with forecasting, which allows businesses to plan and prepare for expenses, hiring, etc. Read the following articles, then come back and share what was most surprising to you. Suggest one way you might use regression in your current job or in your chosen major.