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3 years ago

9

In a study of 250 adults, the mean heart rate was 70 beats per minute. Assume the population of heart rates is known to be appro

ximately normal with a standard deviation of 12 beats per minute. What is the 99% confidence interval for the mean beats per minute?

1 answer:

PSYCHO15rus [73]3 years ago

7 0

68 - 72!! hope this helps

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