Results 1 to 1 of 1

Thread: Normal and Sampling Distribution #2

  1. #1
    Apr 2008

    Normal and Sampling Distribution #2

    Please help! I've got nooo idea what to do!

    4. The average and standard deviation of the amount of Goods and Services Tax remitted by all performance artists in a twelve month period were $6.69 thous and $1.67 thous respectively. If a sample of 116 artists was taken, find the average value (in thous dollars) below which only 1% of taxes would lie.

    5. The length of time of long-distance phone calls has a variance of 38.4 minutes squared. It is also known that 7% of calls last longer than 42.4 minutes. Find the mean assuming the distribution closely approximates a normal distribution

    Your help would be muchly appreciated!!
    Last edited by mr fantastic; Sep 11th 2009 at 07:42 PM. Reason: Questions moved from original thread.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 7
    Last Post: Jul 4th 2010, 08:46 AM
  2. Problem on normal/gaussian distribution sampling
    Posted in the Advanced Statistics Forum
    Replies: 2
    Last Post: Jul 3rd 2010, 09:28 PM
  3. Normal and Sampling Distribution
    Posted in the Statistics Forum
    Replies: 0
    Last Post: Sep 11th 2009, 07:01 PM
  4. Replies: 6
    Last Post: Jan 16th 2009, 05:15 AM
  5. Sampling distribution
    Posted in the Advanced Statistics Forum
    Replies: 1
    Last Post: Oct 1st 2008, 10:23 AM

Search Tags

/mathhelpforum @mathhelpforum