Homework Help: Math

Posted by Karen on Monday, December 17, 2012 at 9:20pm.

7. Most powerful business women in America. Consider that the data set is a normal distribution with a mean of 50 years and a standard deviation of 5 years. A powerful woman is randomly selected from the data, and her age is observed.
Please calculate the probability of the woman having less than 55 years. Also calculate the probability of the woman having between 40 and 60 years, and the probability of the woman being more than 55 years old.

Math - Reiny, Monday, December 17, 2012 at 9:51pm
use this webpage instead of tables of normal distribution values
http://davidmlane.com/normal.html

enter:
mean: 50
SD: 5
click for the appropriate question

e.g. prob of woman being between 40 and 60,
click on "between" bubble and enter 40 and 60 to get
.9545 or 95.45%

Answer this Question

Related Questions

Statistics - 7. Most powerful business women in America. Consider that the data ...
Statistics - Find an example of application of Normal Distribution (or ...
Pre calc - A set of 500 values has a normal distribution. The mean of the data ...
statistic - 1. Which of the following statements are correct? a. A normal ...
Statistics - Which of the following statements are correct? 1.A normal ...
statistics - Which of the following statements are correct? a. a normal ...
Statistics - 1. Which of the following statements are correct? a. A normal ...
MATH - Which of the following normal distributions has the smallest spread? A. A...
statistics - which of the following statements are correct? a. a normal ...
statistics - Which of the following statements are correct? a. A normal ...

For Further Reading

First Name:
School Subject:
Answer: