Uploaded May 2014 | Updated September 2026, 3 hours ago
I discuss confidence intervals and hypothesis tests for a variance when sampling from a normally distributed population. I discuss the logic behind the procedures, discuss some characteristics of the sampling distribution of the sample variance, and give the appropriate formulas. I briefly discuss the results for an example problem, but I don't work through any of the calculations in this video. (I have another video in which I work through a complete example -- it's available at youtu.be/tsLGbpu_NPk)
The fat content in deep fried chicken sandwiches is based on information from the USDA Nutrient Database: ndb.nal.usda.gov/ndb/foods/show/6781?fg=&man=&lfacet=&format=&count=&max=25&offset=&sort=&qlookup=mcdonald%27s+mcchicken
I discuss confidence intervals and hypothesis tests for a variance when sampling from a normally distributed population. I discuss the logic behind the procedures, discuss some characteristics of the sampling distribution of the sample variance, and give the appropriate formulas. I briefly discuss the results for an example problem, but I don't work through any of the calculations in this video. (I have another video in which I work through a complete example -- it's available at youtu.be/tsLGbpu_NPk)
The fat content in deep fried chicken sandwiches is based on information from the USDA Nutrient Database: ndb.nal.usda.gov/ndb/foods/show/6781?fg=&man=&lfacet=&format=&count=&max=25&offset=&sort=&qlookup=mcdonald%27s+mcchicken
