Homework Help: statistics

Posted by Becky on Thursday, October 13, 2011 at 5:02pm.

What is the standard deviation of a normal distribution, whose mean is 35, in which an x-value of 23 has a z-score of -1.63?

statistics - MathGuru, Friday, October 14, 2011 at 5:54pm
Use z-score formula and solve for standard deviation:

z = (x - mean)/sd

-1.63 = (23 - 35)/sd

Solve for sd.

Answer this Question

Related Questions

MATH - Which of the following normal distributions has the smallest spread? A. A...
statistics - An SRS of size n is taken from a large population whose ...
Math (Statistic) - Considered the sampling distribution of a sample mean ...
Math - A normal distribution has a mean of 20 and a standard deviation of 3.What...
statistics - For a normal distribution with a mean of 140 and a standard ...
Stastics - When we convert x-value to z- score and use Standard Normal ...
statistics - what are the mean and standard deviation of a sampling distribution...
Statistics - Given a population with a normal distribution, a mean of 100, and a...
statistics - The mean life of a set of batteries in a T83 calculator is 525 with...
statistics - Consider a normal distribution with mean 30 and standard deviation ...

For Further Reading

First Name:
School Subject:
Answer: