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Mathematics, 24.04.2020 04:28 estherstlouis7812
A local supermarket is trying to sell treadmill, but he needs to decide whether to sell brand A or brand B. To help arrive at a decision, an experiment is conduct using randomly selected 12 months' sales volume of each brand. For each brand, the sales volume for a month is the total amount of sales during that month. Test the hypothesis that the brand A's sales volume is different from brand B's with α = 0.05. Assume the populations to be independent and approximately normally distributed. Following R code may or may not be helpful.> brandA <- c(36720.48, 30245.67, )> brandB <- c(33132.05, 42034.55, )> mean(brandA) = 35841> mean(brandB) = 37449> sd(brandA) = 5075> sd(brandB) = 6884> sd(brandA-brandB) = 10381a) Specify the assumptions and the hypotheses. b) Calculate the test statistic. c) Report the p-value. Following R code may or may not be helpful.> pt(-0.536, df=11) = 0.301> pt(-0.651, df=11) = 0.264> pnorm(-0.536)= 0.295> pnorm(-0.651) = 0.257
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A local supermarket is trying to sell treadmill, but he needs to decide whether to sell brand A or b...
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