Mathematics, 02.01.2020 08:31 friendsalwaysbae
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: 2
Mathematics, 21.06.2019 21:00, gavinarcheroz2jxq
Ireally need subtract and simplify.(-y^2 – 4y - 8) – (-4y^2 – 6y + 3)show your work, ! i will mark you brainliest but you have to show your work.
Answers: 1
Mathematics, 21.06.2019 22:00, mosesbrinker
Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point
Answers: 1
Astudent researcher conducts an experiment that investigates the effects of a new mathematics websit...
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