47
(Choose 1 answer)
(See picture)
A. 1.684
B. 1.387
C. 1.628
D. 1.713
An Izod impact test was performed on 20 specimens of PVC pipe. The sample mean is 1.8 and the sample standard deviation is 0.3. Find a 95% lower confidence bound on the population mean.
Let to.01:19-2.539; to.01:20-2.528; to.05:19-1.7291; to.05:20 1.7247.Rounded to 3 decimal places.
