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.
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Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =
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Mathematics, 21.06.2019 18:30
Which statement describes surface features called maria on the moon
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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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