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Mathematics, 23.08.2019 11:30 ericahale3971
The resting heart rates for 80 women aged 46–55 in a simple random sample are normally distributed, with a mean of 71 beats per minute and a standard deviation of 6 beats per minute. assuming a 90% confidence level, what is the margin of error for the population mean?
0.66
1.10
1.31
1.73
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