Mathematics, 14.01.2020 00:31 bezar77
1. the marketing manager of a firm that produces laundry products decides to test market a new laundry product in each of the firm's two sales regions. he wants to determine whether there will be a difference in mean sales per market per month between the two regions. a random sample of 12 supermarkets from region 1 had mean sales of 88 with a standard deviation of 5.6. a random sample of 17 supermarkets from region 2 hacd a mean sales of 76.9 with a standard deviation of 6.3. does the test marketing reveal a difference in potential mean sales per market in region 2?
2. let be the mean sales per market in region 1 and î¼2 be the mean sales per market in region 2. use a significance level of î± = 0.05 for the test. assume that the population variances are not equal and that the two populations are normally distributed. what is the value of the t-statistic? (round your answer to two decimal places)
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Rewrite the hyperbolic equation 4y^2 -9x^2 +54x-8y-113=0
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Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14
Answers: 1
1. the marketing manager of a firm that produces laundry products decides to test market a new laund...
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