Mathematics, 11.03.2021 01:50 allyfurby
5 stars easy
A physician is testing the effectiveness of wo new exercise plans on 70 subjects. To assign the subjects to the two treatment groups, he writes "Plan 1" on one stip of paper and "Plan 2" on another slip of paper. He randomly picks one of the slips, and assigns the first 35 subjects who signed up to that plan, and assigns the last 35 subjects to the other plan. Select the statement that best describes the composition of the treatment groups.
The treatment groups might not be comparable, because there is not a control group
The treatment groups should be comparable, because there are a large number of subjects in each group.
The treatment groups should be comparable, because the exercise plan for each group was randomly selected
The treatment groups might not be comparable, because the first 35 subjects to sign up for the study might share a characteristic related to exercise, such as high motivation. β
Answers: 2
Mathematics, 21.06.2019 18:30
Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90Β° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that Ξ΄ and Ξ΄ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?
Answers: 2
Mathematics, 21.06.2019 22:30
The pair of coordinates that do not represent the point( 5,150β) is a. (5,-210) b. (5,210) c. (-5,330) d. (-5,-30)
Answers: 1
Mathematics, 21.06.2019 22:30
Fast! find the length of cu. the triangles are similar. show your work.
Answers: 2
5 stars easy
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