For a manufacturing company, which of the following is an example of a period cost rather than a product cost?
(a) depreciation on factory equipment
(b) wages of salespersons
(c) wages of machine operators
(d) insurance on factory equipment

For the population of women whose mothers took the drug des during pregnancy, a sample of 3980 women showed that 63 developed tissue abnormalities that might lead to cancer. provide a descriptive statistic (to 1 decimal) that could be used to estimate the number of women out of 1,000 in this population who have tissue abnormalities. out of 1,000 women developed tissue abnormalities