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normally distributed with a mean of 77.5 beats pr min and standard deviation of 11.5 beats per min a. find the 25th percentile b. find

normally distributed with a mean of 77.5 beats pr min and standard deviation of 11.5 beats per min

a. find the 25th percentile

b. find the probability that 36 randomly selected have a mean pulse rate between 75 beats per min and 80 beats per min. put formula and explain steps

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