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Question: For the research scenarios in parts (a) and (b), explain whether a randomized experiment could be used.
a. To compare two programs to reduce the number of commuters who drive to work: providing discount coupons for the bus, or providing shuttle service for people who need to run errands during the workday.
b. To study the relationship between age and opinion about whether marijuana should be legal.
c. For each of parts (a) and (b) of this exercise, state the explanatory variable and the response variable.
d. For each of parts (a) and (b) of this exercise, give an explanation of a possible confounding variable that could be present if an observational study were done.
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question a country library in minnesota reported the following number of books checked out in 15 randomly selected
The mean time for these workers is = 39.8 seconds and the -value less than 0.0001. It is appropriate to conclude which of the following?
A company has collected the following data from the purchase and use of heating fuel from its Business Statistics department for inventory management of the previous year:
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One of the following experiments does not lend itself to a repeated-measures design using the same participants in every treatment.
Calculate the values of S and Z and the shape factor for the cross section shown.
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