Wednesday

October 1, 2014

October 1, 2014

Posted by **tara** on Saturday, May 12, 2012 at 10:00pm.

a. what percentage of washing machines have replacement times less than 7 years?

b. find the probability that a washing machine will have a replacement time of more than 6.5 years?

- statistics -
**PsyDAG**, Sunday, May 13, 2012 at 12:21pmZ = (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 the Z scores.

**Answer this Question**

**Related Questions**

algebra - total revenue is the total amount of money taken in by a business an ...

Algebra - Total revenue is the total amount of money taken in by a business. An ...

Algebra 1 - The marketing director of a department store interviewed 50 ...

Math -Data management Grade 12 - 10 year old kids were asked to run around the ...

Algebra - Total revenue is the total amount of money taken in by a business. An ...

Algebra - Total revenue is the total amount of money taken in by a business. An ...

stats math - An appliance store sells washing machines and dryers among other ...

Please tell me if my answer is correct - Total revenue is the total amount of ...

Algebra - Total revenue is the total amount of money taken in by a business. An ...

statistics - An engineering company believes it has developed a faster way to ...