Francis, a psychologist, has developed a new test to measure the verbal ability of third graders. to determine the range of scores (and what is a good and bad score), he gives the test to 10,000 third graders. in future, he will compare the performance of others to this reference group. this process of determining meaningful scores involves establishing

Aproperty title search firm is contemplating using online software to increase its search productivity. currently an average of 40 minutes is needed to do a title search. the researcher cost is $2 per minute. clients are charged a fee of $400. company a's software would reduce the average search time by 10 minutes, at a cost of $3.50 per search. company b's software would reduce the average search time by 12 minutes at a cost of $3.60 per search. which option would have the higher productivity in terms of revenue per dollar of input?