Sunday

September 21, 2014

September 21, 2014

Posted by **Tiffany** on Friday, February 11, 2011 at 10:33pm.

The top selling Red and Voss is rated 70,000 miles, which means nothing. In fact, the distance the tires can run until they wear out is a normally distributed random variable with a mean of 82,000 miles and a standard deviation of 6,400 miles.

a) What is the probability that the tire wears out before 70,000 miles?

b) What is the probability that the tire last more than 100,000miles?

- Math & Stats -
**PsyDAG**, Saturday, February 12, 2011 at 1:07pmZ = (score-mean)/SD

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions related to your Z scores.

- Math & Stats -
**Kimberly**, Saturday, February 12, 2011 at 10:28pmThank you PSyDAG

**Answer this Question**

**Related Questions**

STATS - The top selling Red and Voss tire is rated 70,000 miles means nothing. ...

College Chemistry - I am trying to figure out how many minutes are required for ...

Math 221 - I am trying to figure out how to Evaluate the polynomial resulting ...

Business math - Im trying to figure out how to find the equaton for the ...

math - An ant is at the bottom of a 12-foot deep well and is trying to get to ...

Math - Pretty Please help me undderstand ratios and rates. I have been to a ...

Math - Ok so I have this word problem that I can't figure out. Help please!! ...

math - 15,000 down payment, 20-year mortgage loan with annual 6% interest ...

math - i am trying to figure out how much in interest would u have paid out on ...

6th grade Math - I have a word problem with a pattern. I just can't figure it ...