SOLUTION: The toasters produced by a company have a normally distributed life span with a mean of 5.8 years and a standard deviation of 0.9 years, what warranty should be provided so that th

SOLUTION: The toasters produced by a company have a normally distributed life span with a mean of 5.8 years and a standard deviation of 0.9 years, what warranty should be provided so that th

Algebra.Com

Question 1141643: The toasters produced by a company have a normally distributed life span with a mean of 5.8 years and a standard deviation of 0.9 years, what warranty should be provided so that the company is replacing at most 4% of their toasters sold?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
In other words, we want the 4% ile of the distribution.
z(0.04)=-1.75
so -1.75=(x - man)/sd=(x-5.8)/0.9
-1.575=x-5.8
x=4.225 or 4.2 years
RELATED QUESTIONS
the life span of a battery is normally distributed, with a mean of 2100 hours and a... (answered by stanbon)

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

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

01. The life span of a battery ins normally distributed with mean 30 months ans standard... (answered by Lightning_Fast)

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

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

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

Sheepdogs have a life span of 8 to 14 years. Calculate the mean and the standard... (answered by Fombitz)

Light Bulb Life Span � The life span of a certain type of light bulb is normally... (answered by stanbon)