Please explain steps to find these answers on the TI 84 plus calculator: A machine used to...

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Please explain steps to find these answers on the TI 84 pluscalculator:

A machine used to fill gallon sized paint cans is regulated sothat the amount of paint dispensed has a mean of 128 ounces and astandard deviation of 0.20 ounce. You randomly select 40 cans andcarefully measure the contents. The same mean of the cans is 127.9ounces. Does the machine need to be reset? Explain yourreasoning.

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SolutionGiven A machine used to fill gallon sized paint cans isregulated so that the amount of paint dispensed has a mean of 128ounces and a standard deviation of 020 ounceThus Mean    See Answer
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