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Control and Comparison Groups
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LSAT
LSAT.060 Control and Comparison Groups
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A subscription company wants to know whether a cancellation survey reduces cancellations by making customers reconsider. Customers who see the survey are routed to a slower cancellation page. Which design best isolates the survey content?
A
Compare the current survey page with the faster no-survey page.
B
Randomly show customers cancellation pages with identical speed and layout, one including the survey questions and one omitting them, then compare completed cancellations.
C
Add the survey to all cancellation pages and compare cancellations with last month's data.
D
Ask customers who answer the survey whether it made them reconsider.
E
Show the survey only to customers with annual subscriptions.
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