Mathematics, 04.03.2021 14:00, khynia11
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© An electricity company estimates that Daryl will spend £440 on electricity next year.
An administration charge of 15% is added.
Daryl wants to pay in four equal instalments throughout the year,
How much should each payment be?
Answers: 3
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Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables
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© An electricity company estimates that Daryl will spend £440 on electricity next year.
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