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Normal Distribution help

ickyson

New member
Joined
Mar 27, 2012
Messages
2
ive been stuck on this question for a while and i would really appreciate some help! thanks for whoever can help and knows how to do it!
Heres the question:

The Old Farmer's Almanac reports that the average person uses 137 gallons of water daily with a standard deviation of 23 gallons. Find the probability that the mean of a randomly selected sample of 25 people will be between 130 and 136 gallons. Assume the variable is normally distributed. Round answers to the second decimal place.
 

ickyson

New member
Joined
Mar 27, 2012
Messages
2
bump :)
 
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