A medical researcher measured the pulse rates (beats per minute) of a sample of
ID: 3154694 • Letter: A
Question
A medical researcher measured the pulse rates (beats per minute) of a sample of randomly selected adults and found the following Student's t-based confidence interval: With 95.00% Confidence, 69.235449 < (Pulse) < 73.380365 Explain carefully what the software output means
a. 95% of all pulse rates will have a mean rate between 69.2 to 73.4 beats per minute.
b. We are 95% confident the interval 69.2 to 73.4 beats per minute contains the true mean heart rate.
c. The interval 69.2 to 73.4 beats per minute contains the true mean heart rate 95% of the time.
d. 95% of the pulse rates will be between 69.2 to 73.4 beats per minute.
Explanation / Answer
A medical researcher measured the pulse rates (beats per minute) of a sample of randomly selected adults and found the following Student's t-based confidence interval: With 95.00% Confidence, 69.235449 < (Pulse) < 73.380365 Explain carefully what the software output means
ANSWER
b. We are 95% confident the interval 69.2 to 73.4 beats per minute contains the true mean heart rate.
THE CONFIDENCE INTERVAL GIVE US AN IDEA OF WHERE CAN BE THE TRUE MEAN AND THE 95% IS THE PROBABILITY OR CONFIDENCE
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