SOLUTION: The lifetime of a certain appliance is normally distributed with a mean life of 6.5 years.  If the standard deviation is 0.83 years, what is the percentage of appliances will last

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Question 1074646: The lifetime of a certain appliance is normally distributed with a mean life of 6.5 years.  If the standard deviation is 0.83 years, what is the percentage of appliances will last less than 6 years?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Find the z score,
z=%286-6.5%29%2F0.83
z=-0.602
Using EXCEL's NORMSDIST function,
P%28-0.602%29=0.27345
27.3%