Wednesday November 16, 2012
Case Study on the Effect of Lead on Nerve Conduction Velocity
The nerve conduction velocity was measured for 14 individuals --- 7 of those individuals had been exposed
to lead and the other 7 formed a control group that was not exposed to lead. The data are found in the Minitab
(a) Is there evidence in the data that those exposed to lead have slower nerve conduction velocities, on average?
Use significance level alpha=0.01.
(b) Find a 99% confidence interval for the difference in means (mu_control-mu_lead).