An Izod impact test was performed on 20 specimens of PVC pipe.
The ASTM standard for this material requires that Izod impact
strength must be greater than 1.0 ft-lb/in. The sample average and
standard deviation obtained were x over Bar = 1.121 and s = 0.328,
respectively. (a) Test the hypothesis that σ2 = 0.10 against an
alternative specifying that σ2 ≠ 0.10, using α = 0.01 (if reject
enter a value of 1, if not, enter a value of...