Do wearable devices that monitor diet and physical activity help people lose weight? Researchers had 237 subjects who were 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. The 237 differences in weight (weight after 24 months minus weight before using the wearable technology) had ?⎯⎯⎯=−3.5�¯and ?=7.8.. Let ?� be the mean weight difference. What is the test statistic? Give your answer to three decimal places. ?= Identify the correct interpretation of the results based on your analysis.Which is the correct answer ? There is very convincing evidence that there is a decrease in average weight after wearing the device. There is a small amount of evidence that there is a decrease in average weight after wearing the device. There is very convincing evidence that there is an increase in average weight after wearing the device. There is not enough evidence that there is a decrease in average weight after wearing the device.
Do wearable devices that monitor diet and physical activity help people lose weight? Researchers had 237 subjects who were 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.
The 237 differences in weight (weight after 24 months minus weight before using the wearable technology) had ?⎯⎯⎯=−3.5�¯and ?=7.8..
Let ?� be the mean weight difference.
What is the test statistic? Give your answer to three decimal places.
Identify the correct interpretation of the results based on your analysis.Which is the correct answer ?
There is very convincing evidence that there is a decrease in average weight after wearing the device.
There is a small amount of evidence that there is a decrease in average weight after wearing the device.
There is very convincing evidence that there is an increase in average weight after wearing the device.
There is not enough evidence that there is a decrease in average weight after wearing the device.
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