We assume that the annual electricity consumption of a randomly…

Question Answered step-by-step We assume that the annual electricity consumption of a randomly… We assume that the annual electricity consumption of a randomly selected household is normally distributed withexpectation ? = 25,000 and standard deviation ? = 4,000, both measured in kwh.(a) What is the probability that a randomly selected household uses less than 21,500 kwhin a year? What is the probability that they use between 21,500 and 27,000 kwh?(b) Find a power consumption k that is such that 5% of households have a power consumption that ishigher than k.(c) The authorities carry out a savings campaign to reduce electricity consumption in households.ningene. They want to perform a hypothesis test to assess the effect of the campaign. Set them upcurrent hypotheses for this situation. We assume that the power consumption after the savings campaignis still normally distributed with a standard deviation of 4,000 kwh. Average power consumption in 100randomly selected households after the campaign were 24,100 kwh. What will be the conclusion?the hypothesis test when the significance level should be 5%? Math Statistics and Probability INGEL 1005 Share QuestionEmailCopy link Comments (0)