standard_description: Use the mean and standard deviation of a data set to fit it to a normal distribution and to estimate population percentages. Recognize that there are data sets for which such a procedure is not appropriate. Use calculators, spreadsheets, and tables to estimate areas under the normal curve.
problem_activity: Three data sets are shown below.
[IMG]
a.   Estimate each population mean based on the data in the samples.
b.   Which estimate do you think is most accurate? Explain your reasoning.


aligns: no