Astudy of the effects of exercise used rats bred to have high or low capacity for exercise. there were 16 high-capacity and 16 low-capacity rats. to compare the mean blood pressure of the two types of rats using the conservative option 2 t- procedures. what are the associated degrees of freedom?

He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?