Mathematics, 21.04.2020 19:26 sjdpdpisdjsipjd7327
Consider an experiment to investigate the effectiveness of different insecticides in controlling pests and their impact on the productivity of tomato plants. What is the best reason for randomly assigning treatment levels (spraying or not spraying) to the experimental units (farms)? (a) Random assignment allows researchers to generalize conclusions about the effectiveness of the insecticides to all farms. (b) Random assignment will tend to average out all other uncontrolled factors such as soil fertility so that they are not confounded with the treatment effects. (c) Random assignment eliminates the effects of other variables, like soil fertility. (d) Random assignment eliminates chance variation in the responses. (e) Random assignment helps avoid bias due to the placebo effect.
Answers: 1
Mathematics, 21.06.2019 14:00, heavendl13
Adriveway is 60-feet long by 6-feet wide. the length and width of the driveway will each be increased by the same number of feet. the following expression represents the perimeter of the larger driveway: (x + 60) + (x + 6) + (x + 60) + (x + 6) which expression is equivalent to the expression for the perimeter of the larger driveway? a) 2(x + 66) b) 4x + 33 c) 4(x + 33) d) 4(x + 132)
Answers: 1
Mathematics, 21.06.2019 20:30, PatienceJoy
If there is 20 dogs in the shelter and 5 dogs get homes, and then 43 more dogs come. how many dogs are there in the shelter?
Answers: 1
Consider an experiment to investigate the effectiveness of different insecticides in controlling pes...
Health, 28.09.2019 04:40
Mathematics, 28.09.2019 04:40
Mathematics, 28.09.2019 04:40
Mathematics, 28.09.2019 04:40
Mathematics, 28.09.2019 04:40
Mathematics, 28.09.2019 04:40