The owner of a fish market determined that the average weight for a catfish is 3.2 pounds with a standard deviation of 0.8 pound. Assuming the weights of catfish are normally distributed, above what weight (in pounds) do 89.80% of the weights occur?
选项:
A:3.245;
B:2.542;
C:1.895;
D:2.184
发布时间:2024-07-28 09:56:40