Do wearable devices that monitor diet and physical activity help people lose weight? Researchers had 237 subjects, already involved in a program of diet and exercise, use wearable technology for 24 months. They measured their weight (in kilograms) before using the technology and 24 months after using the technology. Explain why the proper procedure to compare the mean weight before using the wearable technology and 24 months after using the wearable technology is a matched pairs t test. Choose the correct explanation. O a. A person's weight before and after wearing the device would not be independent; thus, the data from this before and after study should be analyzed using a matched pairs t test. O b.A person's weight before and after wearing the device would be independent: thus, the data from this before and after study should be analyzed using a matched pairs t test. C. A person's weight before and after wearing the device would not be independent; thus, the data from this before and after study should not be analyzed using a matched pairst test. O d. A person's weight before and after wearing the device would be
Do wearable devices that monitor diet and physical activity help people lose weight? Researchers had 237 subjects, already involved in a program of diet and exercise, use wearable technology for 24 months. They measured their weight (in kilograms) before using the technology and 24 months after using the technology. Explain why the proper procedure to compare the mean weight before using the wearable technology and 24 months after using the wearable technology is a matched pairs t test. Choose the correct explanation. O a. A person's weight before and after wearing the device would not be independent; thus, the data from this before and after study should be analyzed using a matched pairs t test. O b.A person's weight before and after wearing the device would be independent: thus, the data from this before and after study should be analyzed using a matched pairs t test. C. A person's weight before and after wearing the device would not be independent; thus, the data from this before and after study should not be analyzed using a matched pairst test. O d. A person's weight before and after wearing the device would be
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Transcribed Image Text:Do wearable devices that monitor diet and physical activity help people
lose weight? Researchers had 237 subjects, already involved in a program
of diet and exercise, use wearable technology for 24 months. They
measured their weight (in kilograms) before using the technology and 24
months after using the technology.
Explain why the proper procedure to compare the mean weight before
using the wearable technology and 24 months after using the wearable
technology is a matched pairs t test. Choose the correct explanation.
O a. A person's weight before and after wearing the device would not be
independent; thus, the data from this before and after study should be analyzed
using a matched pairs t test.
O b.A person's weight before and after wearing the device would be independent:
thus, the data from this before and after study should be analyzed using a
matched pairs t test.
C. A person's weight before and after wearing the device would not be
independent; thus, the data from this before and after study should not be
analyzed using a matched pairs t test.
O d. A person's weight before and after wearing the device would be
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