45 A research group is studying the effect of blue light at nighttime on sleep quality. Researchers assign subjects randomly to two groups. One group uses cellphones or tablets at night before bed, and the other group has no access to any screens for two hours before bed. The group with no blue light reported falling asleep faster and sleeping better. What is the appropriate conclusion? There is a causal relationship between use of blue light and sleep quality. There is no association between use of blue light and sleep quality. There is an association between use of blue light and sleep quality, but no causation can be concluded. There is a causation between use of blue light and sleep quality, but no association can be concluded.
45 A research group is studying the effect of blue light at nighttime on sleep quality. Researchers assign subjects randomly to two groups. One group uses cellphones or tablets at night before bed, and the other group has no access to any screens for two hours before bed. The group with no blue light reported falling asleep faster and sleeping better. What is the appropriate conclusion? There is a causal relationship between use of blue light and sleep quality. There is no association between use of blue light and sleep quality. There is an association between use of blue light and sleep quality, but no causation can be concluded. There is a causation between use of blue light and sleep quality, but no association can be concluded.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
Problem 11PPS
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