5 pts You are awaiting your tax return and the time at which the mailman deliver

Question

5 pts You are awaiting your tax return and the time at which the mailman delivers the mail to your home follows a normal distribution with a mean time of 840 minutes into the day (2:00pm) and a standard deviation of 10 minutes. There is approximately a 68% chance that the mail will arrive between what two times, if the 68% is equally distributed around the mean? 820 minutes into the day (1:40pm) and 860 minutes into the day (2:20pm 830 minutes into the day (1:50pm) and 850 minutes into the day (2:10pm 825 minutes into the day (1:45pm) and 855 minutes into the day (2:15pm) 835 minutes into the day (1:55pm) and 845 minutes into the day (2:05pm) Al

Explanation / Answer

using empirical rule

68% lies within 1 sd of mean

(840-10 , 840+10)

=(830,850)

option B) is correct

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