SOLUTION: For a certain type of computers, the length of time between charges of the battery is normally distributed with a mean of 51.3 hours and a standard deviation of 13.5 hours.
3% o
Algebra.Com
Question 1136413: For a certain type of computers, the length of time between charges of the battery is normally distributed with a mean of 51.3 hours and a standard deviation of 13.5 hours.
3% of the computers have a length of time more than k hours. Find the value of k.
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
the 97%ile has z=+1.88
z=(x-mean)/sd
1.88=(x-51.3)/13.5
25.38=x-51.3
x=76.4 hours
or k=76.4 hours
RELATED QUESTIONS
For a certain type of computer the length of time between charges of the battery is... (answered by edjones)
A certain type of storage battery lasts on the average 3.0 years, with a standard... (answered by VFBundy)
Q.2 By using Normal Distribution, solve the following:
a) A certain type of battery... (answered by jim_thompson5910)
Suppose the battery life on an apple iPhone is approximately normally distributed with a... (answered by ewatrrr)
f the life, in months, of a certain type of car battery is normally distributed with a... (answered by stanbon)
The lifetime of a Duracell AAA battery is normally distributed with a mean M=28.5 hours... (answered by stanbon)
the lifetime of a battery is normally distributed with a mean life of 40 hours and a... (answered by ewatrrr)
The mean incubation time for a type of fertilized egg kept at a certain temperature is 24 (answered by ewatrrr)
The lifetime of a certain type of machine is normally distributed with mean=2.5 years,... (answered by stanbon)