I Ve Been Working On These Two Questions For A While The Wording Is Throwing Me

I’ve been working on these two questions for a while. The wording is throwing me off, and I’m struggling to work through the problems. Thx so much!

A random sample of 30 households was selected as part of a study on electricity usage, and the number of kilowatt-hours (kWh) was recorded for each household in the sample for the March quarter of 2006. The average usage was found to be 375kWh.

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