A random sample of 25 values is drawn from a mound-shaped and symmetric distribution. The sample mean is 12 and the sample standard deviation is 2. Use a level of significance of 0.05 to conduct a two-tailed test of the ...
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Need help with calculating these problems: A research group conducted an extensive survey of 2957 wage and salaried workers on issues ranging from relationships with their bosses to household chores. The data were gather ...
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Let's do some R.... Suppose you have the following situation: You have a large jar of beans, 43% black, 57% white. You take a sample of 14 beans. a) Use R to figure out the probability for every single possible outcome. ...
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Let's pretend that in a hospital, 7% of patients are "high-risk" while the others are "lower-risk". For patients that are high-risk, 75% will be re-admitted within 30 days. For "lower-risk" patients, the 30day re-admitta ...
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A Diamond can be classified as either gem qulaity or industrial grade. Suppose that 92% of diamonds are classified as industrial grade. Would it be unusual if atleast one of five randomly selected diamonds is gem quality ...
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Robertson Steel is forecasting the following numbers: EBIT $1,000,000 Interest Expense 300,000 ROE 20% The company is in the 40 percent tax bracket. After putting together the forecast the ...
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A business analyst in the Washington, D.C. area looked at the following Christmas 2016 and 2017 toy sales in Metro D.C. Six toy stores were were contacted and shared the following information where x is 2016 sales and y ...
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New York graduates tend to leave the state after graduating. A study asked the students of NYU "Are you planning to stay in NY after graduation?" In the sample, only 37% answered yes. The study explained that with a 95% ...
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Suppose we can only sample from Uniform distribution (0,1) with k=3. Design an algorithm to simulate chi-square distribution with 2k freedom via general transformation method.
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DePaul University makes student IDs of length 5 characters by picking 2 letters from D,E,P,A,U,L; no repetitions and the order is not important followed by picking 3 digits from 0,1,2,3,4,5,6,7,8,9; no repetitions and th ...
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