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Salaries of 40 college graduates who took a statistics course in college have a mean of $62, 200. Assuming a standard deviation of $11,766 construct a 90% confidence interval for estimating the population mean.
Statistics and Probability, Statistics
Determine the minimum sample size required when you want to be 98% confident that the sample mean is within two units of the population mean. Assume a standard deviation of 4.82 in a normally distributed population.
1) Investment A will return to you $2011 in one year if you invest $1750 today. Investment B will return to you $3146 in one year. What is the most you will pay for Investment B? Round to the dollar.
Total cholesterol in children 10 to 15 years of age is assumed to follow a normal distribution of 191 and a standard deviation 22.4. What proportion of children 10 to 15 years of age has total cholesterol between 180 and ...
How does the cost of capital affect capital investments that the firm makes? Cite examples.
Candidate A's pollster conducted a survey in which 460 out of 720 respondents indicated they would probably vote for Candidate A. Compute the confidence interval for the population. This is the question that I'm stuck on ...
A chemical company is interviewing two people to become its risk manager. One has a background of management positions chemical refineries. The other has a background providing risk management consulting services to depa ...
What is the sample size for studies with MOE of +/-3.5% and +/-2.8%?, with a confidence level of 95%, sample statistics of .50? Please show work.
The distance between the Y value in the data and the predicted Y value from the regression equation is known as the residual. What is the value for the sum of the squared residuals?
A copier services company is considering adding an advanced model to its product line but is concerned about excessive maintenance calls. During a trial introduction in a test market, maintenance personnel recorded X, th ...
Table 1. Fasting Blood FBS of Group A FBS of Group B 95 90 100 100 125 125 175 200 250 550 1. What is the mean fasting blood sugar value for each group? What is the median? Mode? Group A: mean:145, median: 125, mode: n ...
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