Saturday
July 26, 2014

Homework Help: Statistics

Posted by ---- on Thursday, November 21, 2013 at 11:11am.

The standard deviation for a population is σ = 15.3. A sample of 36 observations selected from this population gave a mean equal to 74.8.
a) Make a 90% confidence interval for μ
b) Construct a 95% confidence interval for μ.
c) Determine a 99% confidence interval for μ.
d) Does the width of the confidence intervals constructed in parts a through c increase as the confidence level increases? Explain your answer

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

statistics - How do we compute sample size fluctuations? Suppose we have a ...
Statistics - If the standard deviation of a population is 56 and we want the ...
statistics - Given a sample size of 38, with sample mean 660.3 and sample ...
statistics - What are the values of the mean and standard deviation of a ...
Statistics - A random sample of size 36 is to be selected from a population ...
Stor - Here is a simple way to create a random variable X that has mean μ ...
Statistics - The t distribution should be used when ___. the sampling population...
Math - The mean of a sample of 25 was calculated as xbar = 500. The sample was ...
statistics - For a population that has a standard deviation of q0, figure the ...
Statistics - For a population that has a standard deviation of 10, figure the ...

Search
Members