d) Find the cut-off for the top 30% of electricity usage in a 4 person household. e) What is the standard deviation of E? f) There are 15 households of 4 people in a subdivision. What is the expected amount of electricity used by these households for a month?

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Please don't switch the subject to Statistics/Probability or Advanced Math. For some reason whenever the subject is switched to those two. I don't receive any help it is a bug. please help me thank you.

d) Find the cut-off for the top 30% of electricity usage in a 4 person household.
e) What is the standard deviation of E?
f) There are 15 households of 4 people in a subdivision. What is the expected
amount of electricity used by these households for a month?
Transcribed Image Text:d) Find the cut-off for the top 30% of electricity usage in a 4 person household. e) What is the standard deviation of E? f) There are 15 households of 4 people in a subdivision. What is the expected amount of electricity used by these households for a month?
In Indiana the amount of electricity used by a household of 4 varies evenly
between 857 kWh and 945 kWh. Let E represent the amount of electricity used in a
4-person household in a month. Note: kWh stands for kilowatt hours and is the unit
of measurement for electricity used.
Transcribed Image Text:In Indiana the amount of electricity used by a household of 4 varies evenly between 857 kWh and 945 kWh. Let E represent the amount of electricity used in a 4-person household in a month. Note: kWh stands for kilowatt hours and is the unit of measurement for electricity used.
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