Maurice Tutor

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Algebra,Applied Sciences,Biology,Calculus,Chemistry,Economics,English,Essay writing,Geography,Geology,Health & Medical,Physics,Science Hide all
Teaching Since: May 2017
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Education

  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 10 Jun 2017 My Price 9.00

confidence interval for the variance

Stat Assignment 6A1) Using table G, find the values for CHI-square left and right if alpha = 0.01 and n = 23. 2) Find the 90% confidence interval for the variance and standard deviation if a sample of 15 has a standard deviation of 2.3. Assume the variable is normally distributed. 3) Find the 95% confidence interval for the variance and standard deviation of the ounces of Mike’s hard cider that a machine dispenses in 12 ounce cups. Assume the variable is normally distributed. The raw data are: 12.3, 12.1, 12.2, 11.8, 12.0, 12.5, 11.7, and 11.9.Stat Assignment 6A

 

1)      Using table G, find the values for CHI-square left and right if alpha = 0.01 and n = 23.

 

               

2)      Find the 90% confidence interval for the variance and standard deviation if a sample of 15 has a standard deviation of 2.3. Assume the variable is normally distributed.

 

 

3)      Find the 95% confidence interval for the variance and standard deviation of the ounces of Mike’s hard cider that a machine dispenses in 12 ounce cups. Assume the variable is normally distributed. The raw data are: 12.3, 12.1, 12.2, 11.8, 12.0, 12.5, 11.7, and 11.9. 

 

 

Stat Assignment 6B

 

1)      The average production of peanuts in W. Virginia is 3000 pounds per acre. A new plant food is test on 60 acres and the mean yield is 3120 pounds per acre for these plots with a standard deviation of 578 pounds. At Alpha = 0.05, can one conclude that the average production has increased with the new food?

 

               

 

2)      A researcher claims that the yearly consumption of soft drinks is 52 gallons per person. In a sample of 50 randomly selected folks who drink soft drinks, the mean was 56.3 gallons and the standard deviation was 3.5 gallons. At Alpha = .01, is the researcher’s claim valid? 

Answers

Maurice Tutor
(5)
Status NEW Posted 10 Jun 2017 11:06 PM My Price 9.00

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