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    Statistics Question: Light Bulb Manufacturer

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    Trying to set up the analysis of a manufacturer of fluorescent light bulbs states that on the average, these light bulbs have a lifetime of 1600 hours. A sample of 100 bulbs was tested and the mean lifetime was 1570 hours with a standard deviation of 120 hours. Do these bulbs have a lifetime of 1600 hours?

    Test at .05 and .01 significance and determine p value.

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    Trying to set up the analysis of a manufacturer of fluorescent light bulbs states that on the average, these light bulbs have a lifetime of 1600 hours. A sample of 100 bulbs was tested and the mean lifetime was 1570 hours with a standard deviation of 120 hours. Do these ...

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