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Suppose the lifelengths in hours of lightbulbs from a manufacturing process are known to be…

Suppose the lifelengths in hours of lightbulbs from a manufacturing process are known to be distributed Gamma Suppose the lifelengths in hours of lightbulbs from a manufacturing process are known to be... is unknown. A random sample of 27 bulbs was taken and their lifelengths measured with the following data obtained.

Suppose the lifelengths in hours of lightbulbs from a manufacturing process are known to be...

Determine an approximate 0.90-confidence interval for θ