Discussion – Interpreting Confidence Intervals

What meaning did Thomas Jefferson, then Secretary of State, have in mind when writing for this this country's Bill of Rights where the frontier was the end of Massachusetts, Pennsylvania and Georgia (among the thirteen colonies) and hostile Brtish, French, Indian and Spanish armies surrounded the small states.
December 14, 2017
Reviewing the Literature and Applying Theory
December 14, 2017

Discussion – Interpreting Confidence Intervals

This week’s discussion surrounds an example of how one industry used statistics to make important analytics decisions about how it best served its customers:
In the 1960s, data were collected on the weights of people to determine the safe passenger capacity of aircraft. Using a random sample the mean weight was found to be 166.3 lbs.
In recent decades, the mean weight of the population has increased considerably, so we need to update our estimate of that mean.
Recently, a simple random sample of the weights of n = 40 people was collected and found to have a mean of = 172.55 lb.
How could these data be used to impact airline passengers’ experiences? Consider areas such as ticket purchasing, cost, safety, customer service, or any other area that may come to mind.

 

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