set 06

First report: Use the Honolulu Heart Study (HHS) dataset to calculate the sample mean, sample standard deviation, and sample size for body height values comparing smokers and non-smokers.  State and discuss an appropriate null hypothesis.

Second report: Use the U.S. counties dataset to calculate, compare, and discuss the 95% confidence interval estimate (95% CIE = mean ± two standard errors) for mean infant mortality rate among California counties with the 95% CIE for mean infant mortality rate for North Carolina counties.  State and discuss an appropriate null hypothesis.

OPTIONAL EXTRA-CREDIT report: Use the U.S. counties dataset to create a x:y scatterplot graph comparing median household income and infant mortality rate for all North Carolina counties, and discuss their statistical correlation using an appropriate null hypothesis.

-----