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

suppose the replacement times for washing machines are normally distributed with mean 8.6 years and standard devistion of 1.6years.

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?

## Answer This Question

## Related Questions

- math - At Soap ans Suds there are 16 washing machines in a single row with no ...
- math - At soap and suds there are 16 washing machines in a single row with no ...
- Grade 5 math - At soap and suds there are 16 washing machines in a single row ...
- Grade 5 math - At soap and suds there are 16 washing machines in a single row ...
- math - Q. At soap and suds there are 16 washing machines in a single row with no...
- 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 ...
- statistics - The ages of commercial aircraft are normally distributed with a ...

More Related Questions