Mathematics, 20.08.2020 21:01 heart80941
Which situation is an example of an observational study?
A. Dividing a class into thirds, giving each third a different amount of
time to read, and then testing comprehension
B. Collecting the blood pressure readings of a group of elderly
individuals in a small town
C. Testing the effectiveness of a mouthwash by allowing one group
to use it and comparing the results with those of a group that
doesn't use it
D. Having customers fill out a questionnaire about their favorite
brand of toothpaste
Answers: 2
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How many lines can be drawn through points j and k? 0 1 2 3
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What are the solutions of the equation? 16x^2 + 24x + 5 = 5 a. 1/4, 5/4 b. -1/4, -5/4 c. -1/4, 5/4 d. 1/4 , -5/4
Answers: 1
Mathematics, 21.06.2019 19:00
Aflower has 26 chromosomes. to create a new flower, how many chromosomes would a sperm cell have? what is this process called? part 2: within a flower cell that has 26 chromosomes, how many chromosomes would a cell that is created within the stem of a flower as it grows, have? what is this process called?
Answers: 1
Mathematics, 21.06.2019 23:00
Rob filled 5 fewer plastic boxes with football cards than basketball cards. he filled 11 boxes with basketball cards.
Answers: 1
Which situation is an example of an observational study?
A. Dividing a class into thirds, giving ea...
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