Wednesday

November 26, 2014

November 26, 2014

Posted by **Jennifer** on Tuesday, November 29, 2011 at 12:27am.

I don't understand how to do this problem. I have a test this weekend and want to understand. It won't be the same question, but one similar. Thanks.

- math - Please help me to understand -
**Reiny**, Tuesday, November 29, 2011 at 8:18amI don't know if you are using some kind of chart for the normal distribution or if you have a "fancy" calculator that can handle that.

The method used by calculators varies from model to model, so I cannot describe it

change your 325000 to a z-score

z-score for 325000 = (325000-356000)/64600

= -.4799

If you have a table, find -.48 (the best you can probably do on the chart) to find .3156

So the prob that the house will cost MORE than 325000 is

1 - .3156 or .6844

so number sold at that range is .6844(396) or 271 homes

**Answer this Question**

**Related Questions**

math - Please help me to understand - The average selling price of homes in a ...

math - The average selling price of homes in a certain city is $356,300. Assume ...

Math - The average hourly wage of employees of a certain company is $14.24. ...

Math - The average hourly wage of employees of a certain company is $14.58. ...

Algebra - The selling prices of houses in a city during one year were normally ...

Math - The average amount customers at a certain grocery store spend yearly is $...

Math - Suppose the average size (in square feet) of homes in a certain region is...

Statistics - find the 90% confidence interval for the variance and standard ...

fnu - The average age of doctors in a certain hospital is 50.0 years old. ...

Statistics - Given that x is a normally distributed random variable with a mean ...