SOLUTION: random sample of 42 graduates revealed worked 5.5 yrs the sample standard deviation was 1.1 yrs Using 99% degree of confidence what is the confidence interval for the population me
Algebra.Com
Question 444432: random sample of 42 graduates revealed worked 5.5 yrs the sample standard deviation was 1.1 yrs Using 99% degree of confidence what is the confidence interval for the population mean
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A random sample of 42 graduates revealed worked 5.5 yrs
the sample standard deviation was 1.1 yrs
Using 99% degree of confidence, what is the confidence interval for the population mean.
------------------------------
x-bar = 5.5
---
ME = zs/sqrt(n) = 2.5758*1.1/sqrt(42) = 0.4372
-----------------
99% CI: 5.5-0.4372 < u < 5.5+0.4372
=====================================
Cheers,
Stan H.
===========
RELATED QUESTIONS
A random sample of 42 college graduates revealed that they worked an average of 5.5 years (answered by Boreal)
A random sample of 90 group leaders, supervisors, and similar personnel revealed that a... (answered by Boreal)
A random sample of 10 observations from one population revealed a sample mean of 23 and a (answered by stanbon)
The mean I.Q of a sample of 1600 children was 99. Is it likely that this was a random... (answered by math_tutor2020)
Business Week conducted a survey of graduates from 30 top MBA programs (Business Week,... (answered by stanbon)
Q)Business Week conducted a survey of graduates from 30 top MBA programs. On the basis... (answered by stanbon)
Find 80%, 85% and 99.9% confidence interval for the sample mean of a population, if we... (answered by Theo)
Find 80%, 85% and 99.9% confidence interval for the sample mean of a population, if we... (answered by robertb)
You are given the sample mean and the sample standard deviation Assume the population is... (answered by CPhill)