Mathematics, 15.08.2020 16:01 mandilynn22

(10 pts) Light bulbs of a certain type are advertised as having an average lifetime of 800 hours. The price of these bulbs is very favorable, so a potential customer has decided to go ahead with a purchase arrangement unless it can be conclusively demonstrated that the true average lifetime is smaller than what is advertised.

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(10 pts) Light bulbs of a certain type are advertised as having an average lifetime of 800 hours. Th...