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What percentage of the heaters would be expected

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Reference no: EM132853521

A large shipment of electric heaters has been received from a supplier.

A random sample of 200 of these has been tested. The distribution is approximately normal with a mean output of 1100 watts and a standard deviation of 100 watts.
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-Using Z-scores, determine what percentage of the heaters would be expected to meet the specification of at least 1000 watts.

-Using Z-scores, determine what percentage of the heaters would be expected to be between 950 watts and 1200 watts.

A labeled normal distribution curve must be shown.

Reference no: EM132853521

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