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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ISBN:9781337282291
Author:Ron Larson
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Chapter8: Sequences, Series,and Probability
Section8.7: Probability
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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.
a) What is the distribution of E ? (state the name only)
b) Find the probability that the electricity used is at most 908 kWh.
c) Given that the electricity used is at least 875 kWh, find the probability it is less
than 928 kWh.
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. a) What is the distribution of E ? (state the name only) b) Find the probability that the electricity used is at most 908 kWh. c) Given that the electricity used is at least 875 kWh, find the probability it is less than 928 kWh.
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