SOLUTION: (Can someone please help me with this question I'm stuck on?) The mean of a normal probability distribution is 716; the standard deviation is 11. (a) About 68% of the obser

Algebra ->  Probability-and-statistics -> SOLUTION: (Can someone please help me with this question I'm stuck on?) The mean of a normal probability distribution is 716; the standard deviation is 11. (a) About 68% of the obser      Log On


   



Question 862872: (Can someone please help me with this question I'm stuck on?)
The mean of a normal probability distribution is 716; the standard deviation is 11.

(a) About 68% of the observations lie between what two values?


Value 1 ??
Value 2 ??

(b) About 95% of the observations lie between what two values?


Value 1 ??
Value 2 ??

(c) Practically all of the observations lie between what two values?


Value 1 ??
Value 2 ??

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!

Hi
For the normal distribution:
one standard deviation from the mean accounts for about 68% of the set
two standard deviations from the mean account for about 95%
and three standard deviations from the mean account for about 99.7%.
mean of a normal probability distribution is 716; the standard deviation is 11.
(a) About 68% of the observations lie between what two values? 705 and 727
(b) About 95% of the observations lie between what two values? 694 and 738
(c) Practically all of the observations lie between what two values? 683 and 749