The Acme Company has developed a new battery. The engineer in charge claims that the new battery will operate continuously for at least 7 minutes longer than the old battery. To test the claim, the company selects a simple random sample of 100 new batteries and 100 old batteries. The old batteries run continuously on average for 190 minutes with a standard deviation of 20 minutes; the new batteries, 200 minutes with a standard deviation of 40 minutes. Test the engineer's claim that the new batteries run at least 7 minutes longer than the old.

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hero · Answer

Sorry, Chrome Aw-Snapped on me. I was almost done

hero · Answer

Now, I don't even feel like re-typing it anymore

hero · Answer

Okay, I will just upload a solution

hero · Answer

attachment

anonymous · Answer

same here chrome went off...thank you