Question

A company uses machines to dispense liquid ingredients into bottles that move along a filling line.The machine that dispenses dressings is working properly when 9 ounces are dispensed. The standard deviation of the process is 0.25 ounce.A sample off 60 bottles is selected periodically,and the filling line is stopped if there is evidence that the average amount dispensed is different from 9 ounces.State the null and alternative hypoteses.Is there evidence that the population average amount is different from 9 ounces.Use a 0.01 level of significance. Suppose that the average amount dispensed in a particular sample of 60 bottles is 8.783 ounces.

          A company uses machines to dispense liquid ingredients into
bottles that move along a filling line.The machine that dispenses
dressings is working properly when 9  ounces are 
dispensed.
The standard deviation of the process is 0.25 ounce.A sample off
60 bottles is selected periodically,and the filling line is stopped
if there is evidence that the average amount dispensed is different
from 9 ounces.State the null and alternative hypoteses.Is there
evidence that the population average amount is different from 9
ounces.Use a 0.01 level of significance.    
Suppose that the average amount dispensed in a particular sample of
60 bottles is 8.783  ounces.

Added by Karen P.

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