This question's due date has already passed. You may post a tutorial, but there's no guarantee that the original asker will purchase the tutorial. But other people might!

Question

\$1.00Statistics help

• From Mathematics: Statistics
• Closed, but you can still post tutorials
• Due on Sep. 07, 2010
• Asked on Sep. 06, 2010 at 10:14:15AM

Rating :No Rating
Tutorials Posted: 0

Q:

#1 Unit 6 Quiz

You wk for a consumer advocate agency and want to find the mean repair cost of a washing machine. As part of your study, you randomly select 55 repair costs and find the mean to be \$110. The sample standard deviation is \$19.70.

a. 90% of the mean confidence interval for the population of mean repair cost.

the 90% interval confidence is _____ , ______ (Round to two decimal places as needed).

b. Compare the amount of information the different sample sizes give about the population.

Available Tutorials to this Question

\$0.50
• This tutorial hasn't been purchased yet.
• Posted on Sep 06, 2010 at 5:35:46PM
Posted by :

Rating (3):A+