STATS QUESTION! HELP HELP HELP
TIRE WARRANTY

4. A tire manufacturer warranties its tires to last at least 20,000 miles or “you get a new set of tires.” In its experience, a set of these tires lasts on average 26,000 miles with SD 5,000 miles. Assume that the wear is normally distributed. The manufacturer profits $200 on each sold set, and replacing a set costs it $400.

a.What is the probability that a set of tires wears out before 20,000 miles?

b.What is the probability that the manufacturer turns a profit on selling a set to one customer?

Question

STATS QUESTION! HELP HELP HELP
TIRE WARRANTY

4.	A tire manufacturer warranties its tires to last at least 20,000 miles or “you get a new set of tires.” In its experience, a set of these tires lasts on average 26,000 miles with SD 5,000 miles. Assume that the wear is normally distributed. The manufacturer profits $200 on each sold set, and replacing a set costs it $400.

a.What is the probability that a set of tires wears out before 20,000 miles?

b.What is the probability that the manufacturer turns a profit on selling a set to one customer?

amistre64 · Answer

last at least 20,000 miles or “you get a new set of tires.” 

lasts on average 26,000 miles 
                     SD 5,000 miles. 

Assume that the wear is normally distributed.

The manufacturer profits $200 on each sold set, and replacing a set costs it $400. ... ok

anonymous · Answer

I dunz even nos where to start...

amistre64 · Answer

What is the probability that a set of tires wears out before 20,000 miles?
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