Question

A company has developed a wristband for monitoring blood sugar levels without requiring direct blood samples. It is interested in demonstrating the accuracy of the device for governmental approval and has decided to test the claim "The glucose level reported by the wristband is within 10% of a standard blood test result." Which of the following data collection processes would be appropriate? Select only one answer choice.
A. Choose a random sample of employees at lunchtime and measure their blodd sugar using both the wristband and a standard blood test.
B. Choose a random sample of people from the local area and random times throughout the day and measure their blood sugar using both the wristband and a standard blood test.
C. Choose a random sample of people from the local area and random times and measure their blood sugar using the wristband. Choose another random sample of people and random times and measure their blood sugar using the standard blood test.
D. Go to a hospital and have the doctors choose a random sample f patients to be tested at random times using both the wristband and the standard blood test.

Answer 1

Answer:

B. Choose a random sample of people from the local area and random times throughout the day and measure their blood sugar using both the wristband and standard blood test.

Step-by-step explanation:

This is because here we are using a sample that is not limited to one time(like lunch time as option 1), the blood reading are of the same person(unlike option 3) and is not biased due to selective sample collection(like patients in a hospital who normally will show a greater range of results)