Homework 8

# Homework 8 - Homework #8 Stats I Due October 23 1. Arthur...

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Homework  #8 Stats I Due October 23 1.  Arthur King is distribution manager for a flour manufacturer.  He is concerned  that the 30-ounce package is not being filled correctly.  From past experience  he knows that the variance for individual package weight is 16 . 0 2 = σ .  A  random sample of size n=25 packages is obtained and carefully weighed.  If  he concludes that packages are being filled properly, he wishes the probability  of error to be  05 . 0 = α  or less. a.  State an appropriate hypothesis test and provide an interpretation. b.  Complete the 5 step hypothesis test using a sample mean of 29.7. c.  Construct the 95 % confidence interval and interpret in two ways. 2.  You are the chief statistician for the Manitou Headlight Works.  Present  production is 400 lights per shift, with a variance of 1600.  A new process to  increase productivity is being tested.  The production manager indicates that a

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## This note was uploaded on 04/23/2008 for the course 40 256 taught by Professor Bowman during the Fall '07 term at Bloomsburg.

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Homework 8 - Homework #8 Stats I Due October 23 1. Arthur...

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