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anonymous
 one year ago
The average life of a motorcycle is 7 years with a standard deviation of 2 years. If the manufacturer is willing to replace only 5% of the motors that fail, for how many years can the company offer a replacement guarantee?
anonymous
 one year ago
The average life of a motorcycle is 7 years with a standard deviation of 2 years. If the manufacturer is willing to replace only 5% of the motors that fail, for how many years can the company offer a replacement guarantee?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@skullpatrol @rational

rational
 one year ago
Best ResponseYou've already chosen the best response.2as a start, look at the ztable and find out the "zscore" corresponding to the area of "0.05"

rational
 one year ago
Best ResponseYou've already chosen the best response.2do you have ztable wid you ?

rational
 one year ago
Best ResponseYou've already chosen the best response.2look up the zscore corresponding to the area 0.05

rational
 one year ago
Best ResponseYou've already chosen the best response.2let me know the zscore once you find it

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I have no idea, I cant seem to figure this one out

rational
 one year ago
Best ResponseYou've already chosen the best response.2look at the ztable : dw:1432810372760:dw whats the zscore corresponding to the area 0.0495 ?

rational
 one year ago
Best ResponseYou've already chosen the best response.2nope, it is actually "1.65" dw:1432810549294:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0But thats not one of the answers. thats why I dont get it. it says 2.1 years 2.8 years 3.7 years 4.9 years

rational
 one year ago
Best ResponseYou've already chosen the best response.2we're not done yet, use zscore formula next

rational
 one year ago
Best ResponseYou've already chosen the best response.2\[\large 1.65 = \dfrac{x7}{2}\] solve \(x\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.03.7. I feel so stupid now... I dont even know what I was doing wrong. Thank you so much!!
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