Mathematics, 06.02.2020 02:44 JamesLachoneus
Suppose a statistics teacher wants to know whether the numberof hours students spend studying in a group affects the finalcourse grade. in each part, explain whether the research methoddescribed is a randomized experiment or an observationalstudy.
a) each student keeeps a log of the hours he or she spendsstudying in a group and reports the total after the course iscompleted.
b) students are randomly assigned to study groups. the teachertells each group how often to meet. this varies from one hour theday before each exam to two hours per week.
c) students voluntarily join groups based on how often thegroups will meet. the groups are designated as meeting weekly, meeting only before exam, s or meeting whenever enough members feelthat it is necessary.
Answers: 3
Mathematics, 21.06.2019 14:50
Brook states that the distance on the line is 4 units. caleb states that the whole line does not have a distance because it continues on forever. vivian states that the line is 6 units long. which distance did brook measure? which distance did vivian measure?
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Mathematics, 21.06.2019 16:10
Abox contains 1 plain pencil and 4 pens. a second box contains 5 color pencils and 5 crayons. one item from each box is chosen at random. what is the probability that a plain pencil from the first box and a color pencil from the second box are selected? write your answer as a fraction in simplest form.
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Mathematics, 21.06.2019 22:00
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Suppose a statistics teacher wants to know whether the numberof hours students spend studying in a g...
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