Mathematics, 30.05.2020 21:59, nook4boo
The electric cooperative needs to know the mean household usage of electricity by its non-commercial customers in kWh per day. They would like the estimate to have a maximum error of 0.12 kWh. A previous study found that for an average family the standard deviation is 1.2 kWh and the mean is 17.9 kWh per day. If they are using a 90% level of confidence, how large of a sample is required to estimate the mean usage of electricity? Round your answer up to the next integer.
Answers: 2
Mathematics, 21.06.2019 22:00, nshuey0930
Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 β’2 is less than x& x is less than 4 β’2 is less than or equal to x & x is less than or equal to 4 β’2 is less than or equal to x& x is less than 4 β’2 is less than x& x is less than or equal to 4
Answers: 2
Mathematics, 21.06.2019 22:30, lilmaddy8856
Which expressions equal 9 when x=4 and y=1/3 a. x2+6y b. 2x + 3y c. y2-21x d. 5 (x/2) -3y e. 3x-9y
Answers: 2
Mathematics, 21.06.2019 23:00, jasmin2344
Ineed to know the ordered pairs for this equation i need the answer quick because itβs a timed test
Answers: 3
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