Mathematics, 18.02.2020 04:44 brattymoo1009
A professor conducts an experiment that investigates the effects of a new statistics CD on the student understanding. His one statistics class is used for the sample. He divides the roster into two halves and uses each half as a group. One group like receives the CD and the other does not receive the CD. Each group consists of 10 students. Observations of students classroom engagement are rated by the professor, according to an engagement scale. How could this study be improved? (Select all that apply)
A. Use an instrument that measures student understanding.
B. Repeat the study again, where a larger sample size can be derived.
C. Randomly assign the students to the two different groups.
D. Ask another professor to make and rate observations, as well.
Answers: 3
Mathematics, 21.06.2019 20:00
Pepe and leo deposits money into their savings account at the end of the month the table shows the account balances. if there pattern of savings continue and neither earns interest nor withdraw any of the money , how will the balance compare after a very long time ?
Answers: 1
Mathematics, 21.06.2019 23:10
In which quadrant does the point lie? write the coordinates of the point. a. quadrant ii; (–2, –4) b. quadrant iii; (2, 4) c. quadrant iii; (–2, –4) d. quadrant iv; (–4, –2)
Answers: 3
Mathematics, 21.06.2019 23:30
Will give brainliest for correct answer 8. use the distance time graph to answer these questions: a. what does the graph tell us about the velocity of the car? b. what is the average velocity of the car? (show work) c. is the velocity reflected in the graph positive or negative?d. is there any point on the graph where the car is not moving? how do we know?
Answers: 1
A professor conducts an experiment that investigates the effects of a new statistics CD on the stude...
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