Mathematics, 15.04.2021 17:40 wbrandi118
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 variance is 2.56 kWh and the mean is 15.5 kWh per day. If they are using a 98% level of confidence, how large of a sample is required to estimate the mean usage of electricity
Answers: 2
Mathematics, 21.06.2019 21:20
The edge of a cube was found to be 30 cm with a possible error in measurement of 0.4 cm. use differentials to estimate the maximum possible error, relative error, and percentage error in computing the volume of the cube and the surface area of the cube. (round your answers to four decimal places.) (a) the volume of the cube maximum possible error cm3 relative error percentage error % (b) the surface area of the cube maximum possible error cm2 relative error percentage error %
Answers: 3
Mathematics, 21.06.2019 21:30
Which of the following is a solution of z^6 = 64i? 2(cos105° + isin105°) 2(cos120° + isin120°) 2(cos135° + isin135°) 8(cos15° + isin15°)
Answers: 1
Mathematics, 21.06.2019 22:10
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Mathematics, 21.06.2019 22:20
Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g
Answers: 2
The electric cooperative needs to know the mean household usage of electricity by its non-commercial...
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