Mathematics, 02.01.2020 05:31, AreYouMyNewDad
Astudent researcher conducts an experiment that investigates the effects of a new mathematics website on student achievement. she randomly assigns students to two groups: one that receives supplemental instruction from the website and one that doesn't receive the supplemental instruction. each sample consists of 20 students. observations of student engagement are rated by the researcher, according to an engagement scale. how could this study be improved?
select all that apply.
a. have another researcher provide ratings, as well.
b. administer a quiz or exam that gauges student understanding.
c. increase the sample size.
d. limit observations to students who are engaged.
Answers: 3
Mathematics, 21.06.2019 19:10, brownzackery71
Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.
Answers: 2
Mathematics, 21.06.2019 21:30, aidanfbussiness
Anumber cube is rolled two times in a row. find the probability it will land on 2 on the first roll and a number greater then 4 on the second roll
Answers: 1
Mathematics, 22.06.2019 01:00, ramireztony741
Michael split a rope that was 28 inches long into 5 equal parts. brenden split a rope that was 30 inches long into 6 equal parts. which boy's rope was cut into longer pieces?
Answers: 1
Astudent researcher conducts an experiment that investigates the effects of a new mathematics websit...
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