Friday
December 19, 2014

Homework Help: Probability help

Posted by Martin on Thursday, October 14, 2010 at 2:31pm.

The heights of the buildings are normally distributed. The mean of the heights is 275 feet and the standard deviation is 30 feet.


A. What is the probability that the buildings height is over 280 feet?

B. What is the probability that a sample of 80 buildings is gathered and the mean height of the buildings was over 280 feet?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Calculus - According to the National Health Survey, the heights of adult males ...
statistics - a rocket club makes its own rockets. The rockets go to a mean ...
statistics - 2.Childrenís heights are normally distributed with a mean of 100 cm...
statistics - 2. Childrenís heights are normally distributed with a mean of 100 ...
statistics - Womenís heights are normally distributed with a mean of 162 cm and ...
statistics - Help me! Population of heights of college students is approximately...
statistics - Suppose that people's heights (in centimeters) are normally ...
Math - Suppose that people's heights (in centimeters) are normally distributed, ...
statistics - It is well known that the heights of individual American men are ...
statistics - The heights of South African men are normally distributed with a ...

Search
Members