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Mathematics, 18.04.2020 03:49 mrashrafkotkaat
In a massive attempt to compete with General Electric, the Acme Light Bulb Company issued a newline of bulb. Acme took 100 bulbs from their new line and measured their lifetime. The mean measuredlifetime for the 100 bulbs was 1280 hours and the sample standard deviation for the 100 bulbs was138.32.
(a) The light bulb lifetimes come from an exponential probability distribution. If ? is the meanlifetime of the light bulbs, and the light bulb lifetimes are iid, give the probability distribution ofthe mean lifetime from the sample of 100 light bulbs. Specify the mean and standard deviationof this sample mean lifetime.(b) Construct a 90% confidence interval of the true mean lifetime of Acme
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In a massive attempt to compete with General Electric, the Acme Light Bulb Company issued a newline...
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