Sunday
March 29, 2015

Homework Help: statistics

Posted by Jade on Thursday, March 11, 2010 at 1:16am.

The accounting department at Weston Materials, Inc., a national manufacturer of unattached garages, reports that is takes two construction workers a mean of 32 hours and a standard deviation of 2 hours to erect the red barn model. Assume the assembly times follow the normal distribution.
a. Determine the Z values for 29 and 34 hours. What percent of the garages take between 32 hours and 34 hours to erect?
b. What percent of the garages take between 29 and 34 hours to erect?
c. What percent of the garages take 28.7 hours or less to erect?
d. Of the garages, 5 percent take how many hours or more to erect?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

statistic - The accounting department at Weston Materials, Inc., a national ...
math - A manufacturer makes two products A and B, each of which is processed in ...
linear equations - A manufacturer makes two products A and B, each of which is ...
System of Linear Equations - A manufacturer makes two products A and B, each of...
statistics - The mean length of a work week for the population of workers was ...
Math - A manufacturer makes two products A and B, each of which is processed in ...
Statistics - The lifetime of computer chips is approximately normal with mean 1....
AP Statistics - A school psychologist reports that the mean number of hours the ...
statistics - The duration of time it takes General Motors to build a car is ...
statistics - 3. The personnel director of a corporation will study the overtime...

Members