Mathematics, 12.10.2019 20:30, rainbowboi

in a study of 225 adults, the average heart rate was 72 beats per minute. assume the population of heart rates is known to be approximately normal, with a standard
deviation of 10 beats per minute. what does a margin of error of 1.1 for the 90% confidence interval of the average beats per minute mean?

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in a study of 225 adults, the average heart rate was 72 beats per minute. assume the population of h...