SOLUTION: The mean of a normal probability distribution is 80; the standard deviation is 6.
About what percent of the observations lie between 68 and 92?
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-> SOLUTION: The mean of a normal probability distribution is 80; the standard deviation is 6.
About what percent of the observations lie between 68 and 92?
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Question 1157069: The mean of a normal probability distribution is 80; the standard deviation is 6.
About what percent of the observations lie between 68 and 92?
You can put this solution on YOUR website! About means estimate
'68 is two sd s from 80 -2 z score'
92 is two sd s from 80 +2 z score
-2 and +2 sd s have about 95% of the observations. It is about 95 (it is exactly 95.44%)
