A certain group of test subjects had pulse rates with a mean of 70.3 beats per m

Question

A certain group of test subjects had pulse rates with a mean of 70.3 beats per minute and a standard deviation of 10 6 beats per minute. Would it be unusual for one of the test subjects to have a pulse rate of 71 5 beats per Minimum 'usuar value beats per minute Type an integer or a decimal ) Maximum 'usua value beats per minute (Type an integer or a decimal.) ls 71.5 beats per minute an unusual pulse rate? A. Yes, because it is smaller than the minimum "usual" value B. Yes, because it is larger than the maximum 'usual value. C. No, because it is larger than the maximum "usualr value. D. No, because it is smaller than the minimum "usual value E. Yes, because i is between the minimum and maximum "usual values. F. No because i is between the minimum and maximum Fusual values

Explanation / Answer

as unusal values are 2 std deviation away from mean

hence minimum usual value =mean -2*std deviation =70.3-2*10.6=49.1

maximum usual value =mean +2*std deviation =70.3+2*10.6=91.5

option F is correct

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