SOLUTION: The shelf life of a battery produced by one major company is known to be normally distributed, with a mean life of 3.9 years and a standard deviation of 0.3 years. What is the prob

Question 867589: The shelf life of a battery produced by one major company is known to be normally distributed, with a mean life of 3.9 years and a standard deviation of 0.3 years. What is the probability that a randomly chosen battery will last more than 3.6 years?
Thanks!
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The shelf life of a battery produced by one major company is known to be normally distributed, with a mean life of 3.9 years and a standard deviation of 0.3 years. What is the probability that a randomly chosen battery will last more than 3.6 years?
-------
z(3.6) = (3.6-3.9)/0.3 = -0.3/0.3 = -1
-----
P(x > 3.6) = P(z > -1) = normalcdf(-1,100) = 0.8413
---------------------
Cheers,
Stan H.
---------------------
RELATED QUESTIONS
The shelf life of a battery produced by one major company is known to be normally... (answered by stanbon)

help help help The shelf life of a battery produced by one major company is known to (answered by stanbon)

I need help... The shelf life of a battery produced by one major company is known to... (answered by jim_thompson5910)

9. The life span of a battery is normally distributed, with a mean of 2500 hours and a... (answered by ewatrrr)

Batteries for a radio are thought to be normally distributed with a mean life of 160... (answered by Fombitz)

The average life of a particular battery is determined to be 56.2 hours with a standard... (answered by lovegod1)

the life span of a battery is normally distributed, with a mean of 2100 hours and a... (answered by stanbon)

Life tests performed on a sample of 13 batteries of a new model indicated: (1) an average (answered by Boreal)

The effective life of a battery cell is considered to be normally distributed with the... (answered by Boreal)