Question: pls solve :) The quality control manager at a compact fluorescent light bub (CFL) factory needs to determine whether the mean leo a large shipment

pls solve :)

The quality control manager at a compact fluorescent light bub (CFL) factory needs to determine whether the mean leo a large shipment of CFS is equal to 7 465 hours. The population standard deviation is 840 hours A random sample of 49 light bulbs indicates a sample meanifie of 7205 hours a. At the 005 level of cance, is there evidence that the mean is different from 7.455 hours? b. Compute the value and interpret its meaning Construct a confidence interval estimate of the population mean life of the bus d. Compare the results of (a) and What conclusions do you reach? a. Lety be the population mean Determine the rul hypothesis He, and the arrative types H+

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