SOLUTION: Here is my question. I am totally lost in this class I am taking. Your help is greatly appreciated. Thank you! 60. In establishing warranties on HDTV sets, the manufacturer want

Question 188172This question is from textbook
: Here is my question. I am totally lost in this class I am taking. Your help is greatly appreciated. Thank you!
60. In establishing warranties on HDTV sets, the manufacturer wants to set the limits so that few will need repair at manufacturer expense. On the other hand, the warranty period must be long enough to make the purchase attractive to the buyer. For a new HDTV the mean number of months until repairs are needed is 36.84 with a standard deviation of 3.34 months. Where should the warranty limits be set so that only 10 percent of the HDTVs need repairs at the manufacturer�s expense? This question is from textbook

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
In establishing warranties on HDTV sets, the manufacturer wants to set the limits so that few will need repair at manufacturer expense. On the other hand, the warranty period must be long enough to make the purchase attractive to the buyer. For a new HDTV the mean number of months until repairs are needed is 36.84 with a standard deviation of 3.34 months. Where should the warranty limits be set so that only 10 percent of the HDTVs need repairs at the manufacturer�s expense?
-----------------------
Find the z-value that has 10% of the population above it.
---
That number is z = 1.645
----------------------------
Now, using z = (x-u)/s, solve for "x".
1.645 = (x-36.84)/3.34
x-36.84 = 5.4943
x = 5.4943+36.84
x = 42.33
=======================
Cheers,
Stan H.
RELATED QUESTIONS
I could use some help please.I am taking an on line couase and this did not come out of... (answered by checkley75)

It was reported in your department meeting that over the past year your hospital... (answered by rothauserc)

Write the equation of the line given on the graph below?? The line is (5,-6) (0,5) (5,6) (answered by lwsshak3)

Hello, I need some help with factoring. The problem I am working on is the following: (answered by Alan3354,jim_thompson5910)

Pre-Algebra- I think..not sure. This problem is from Contemporary's Number Power... (answered by jim_thompson5910)

Hello! I am working on quadratic equations this week, in my Algebra class (section 11.4,... (answered by Alan3354)

I am about to be taking a compass test to enter college - I have looked at sample... (answered by longjonsilver)

Hello, Here is the question that I have to answer. I am totally lost!! I have read the... (answered by Alan3354)

I have had the flu for a week and I am behind in class. Can someone please help me.... (answered by RAY100)