Question

A machine is designed to fill 16-ounce bottles of shampoo. When the machine is working properly,...

A machine is designed to fill 16-ounce bottles of shampoo. When the machine is working properly, the amount poured into the bottles follows a normal distribution with mean 16.05 ounces with a standard deviation of .2005 ounces.

If four bottles are randomly selected each hour and the number of ounces in each bottle is measured, then 95% of the means calculated should occur in what interval?

Hint: the standard deviation rule says that 95% of the observations are within how many standard deviations away from the mean?

Round answers to four decimal places.

(  ,  )

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