Mathematics, 17.09.2019 22:10, rajene9302
The math department recently purchased new learning software for their freshman math classes. the instructors want to use the learning software instead of a textbook. so they decide to study the effectiveness of the software. first they test the skills and concept mastery for a number of the freshman math students. then they randomly divide the students into two groups. one group uses the learning software for a particular lesson and the other group uses the regular textbook. then the instructors retest all of the students and compare the improvement in the skills and concept mastery for the two groups. what is the purpose of random assignment in this experiment? check all that apply. to produce treatment groups with similar characteristics to avoid bias to generalize the experiment results to all freshman math students to control for confounding variables quiz
Answers: 3
Mathematics, 21.06.2019 16:40, Thomas7785
Which of the following is most likely the next step in the series? a3z, b6y, c9x, d12w, Π΅15v, f18u
Answers: 2
Mathematics, 21.06.2019 21:30, Brendah7145
Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 25002500 grams and a standard deviation of 800800 grams while babies born after a gestation period of 40 weeks have a mean weight of 27002700 grams and a standard deviation of 385385 grams. if a 3232-week gestation period baby weighs 21252125 grams and a 4040-week gestation period baby weighs 23252325 grams, find the corresponding z-scores. which baby weighs lessless relative to the gestation period?
Answers: 1
The math department recently purchased new learning software for their freshman math classes. the in...
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