Quiz: Quiz ... Question LL Of LL This question: 1 point(s) possible Quarters are currently minted with weights having a mean of 5.762 and a standard deviation of 0.063. New equipment is being tested in an attempt to improve quality by reducing variation. A simple random sample of 26 quarters is obtained from those manufactured with the new equipment, and this sample has a standard deviation of 0.045. Use a 0.05 significance level to test the claim that quarters manufactured with the new equipment have weights with a standard deviation less than 0.063. Does the new equipment appear to be effective in reducing the variation of weights? What can be said about the effectiveness of the new equipment? O A. Since Ho: 6