Would like some help with this problem.?

The quality control manager at a light bulb factory needs to estimate the average life of a large shipment of light bulbs. The process variance is known to be 10000 hours. A random sample of 64 light bulbs indicated a sample average of 350 hours. Construct a 90% confidence interval for the true average life of light bulbs in this shipment.

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  • Anonymous
    2 months ago

    unrelated to personal finance. Cheater.

  • 2 months ago

    The question does not address the problem.

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