Ask Experts Questions for FREE Help !
Ask
    luc3rito's Avatar
    luc3rito Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Apr 27, 2011, 04:20 PM
    Z distribution Statistic questions
    Crossett Truck Rental has a large fleet of rental trucks. At times many of the trucks need substantial repairs. Mr. Crossett has requested a study of the repair costs. A random sample of 64 trucks is selected. The mean annual repair cost for the sample is $1,200. Estimate the mean annual repair cost for all rental trucks using a 95 percent confidence interval for the population mean. Assume that the population standard deviation, σ, is equal to $280.

    • Estimate the mean annual repair cost for all rental trucks using a 95 percent confidence interval for the population mean.
    • Complete the bell-curve diagram including all points
    • Interpret the results
    smoothy's Avatar
    smoothy Posts: 25,490, Reputation: 2853
    Uber Member
    		  
    #2

    Apr 28, 2011, 09:05 AM

    Read this first: Expectations for the Homework Help board
    Do not simply retype or paste a question from your book or study material

    We won't do your homework questions for you.
    You were given the assignment for you to learn.

    If you come up with your own answer and post it for us to critique that is within reason.

    If you have some SPECIFIC questions that you couldn't find or didn't understand, we may help with that.
    But this is your assignment, so show us you have at least attempted to complete it on your own.

    Thank you.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Statistic [ 2 Answers ]

IDENTIFY the CIRCUMSTANCES in which the median ratherthan the mean is the preferred measure of central tendency.

Statistic Questions [ 2 Answers ]

1. (3 points) For a standard normal distribution (m = 0, σ = 1) find the probabilities: a. z falling between -1.96 and +1.96 b. z falling above 1.64 c. Falling below -1.96 d. Falling above -1.96 2. (2 points) The four general type of research design are secondary,...

Statistic questions [ 0 Answers ]

true or false:the height of the curve shows the probabilityof accepting a null hypothesis

Statistic [ 1 Answers ]

1. An auditor of the book ‘Statistics: The Simple Way to Understand’ was found that there are 25 typing error in 100 page. In the given page, find: I. the mean and standard deviation of typing error.

View more questions Search