Engineers are comparing the permanent deformation characteristics of two new newly developed material samples.
I was having problem with my computer - did not mean to violate the rules.It was unintentional.

On the first material ten rebound deflection measurements were taken, yielding a mean of 26 X 10-3 in. and a standard deviation of 2 X 10-3 in.
On the second material 16 measurements were taken, yielding a mean of 21 X 10-3 in. and a standard deviation of 7 X 10-3 in.
Assume that all samples are independent and taken from a normal population
  • Can you conclude with 98% Confidence that the actual deflection variances are different for the two tested highway sections?