statistic

 
(Confidence Intervals, 2013)
In the video, there is a discussion about how confidence intervals can be used to infer facts from your sample to the population.  Select a variable you are likely to work within your career, then using the video and the text in this course, answer the following questions:

Describe the variable and how it might be used in your career (the example from the video is battery life).
Explain why you would need to use a sample to infer something about the population.
In your own words, explain why you believe that a confidence interval will accurately predict the mean of the population from which the sample was drawn?
What would happen if the confidence interval for your chosen variable did not include the value of the population mean?
What changes to sample would make you more certain that the confidence interval contained the value of the population mean?

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Please be sure to validate your opinions and ideas with citations and references in APA format.
Estimated time to complete: 2 hours
This topic is valued at 40 points. Please review post and response expectations. Please review the rubric to ensure that your response meets criteria (Read Me First Section of the Course).
Peer Response: Unit 5, Due Sunday by 11:59 pm CT
Confidence Intervals Discussion
Instructions:
Please respond to a minimum of two peers. Include in your response:

Ask them a question about the variable they have chosen.

Ask them about the consequences that could occur were the confidence interval from the sample incorrect in predicting the population mean.
What options would you suggest they employ to increase the likelihood that the confidence interval contained the true mean of the population?

Please be sure to validate your opinions and ideas with citations and references in APA format.
Estimated time to complete: 1 hour
Please review post and response expectations. Please review the rubric to ensure that your response meets criteria (Read Me First Section of the Course).
References:
Confidence Intervals: Against All Odds: Inside Statistics [Video file]. (2013). Retrieved August 1, 2017, from https://fod.infobase.com/PortalPlaylists.aspx?wID=104861&xtid=111536

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