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A factory employs over 3000 workers, of whom 30% are women. If the 15 members of the union executive committee were chosen from among the workers without regard to gender: Does this represent a binomial random distribution? Why?
Compute the mean of the distribution of the sample means and the population mean. What is true about the two values?
Explain the double-negative logic of hypothesis testing (eg: a scientist fails to reject the null hypothesis). What is the five-step process for hypothesis testing? Is the order important? Why or why not?
Suppose in a population of 100,000, the probability that an individual will die from bird flu in a given winter is .00009. If the data fits a Poisson distribution, then the mean number of people in that population that will die from bird flu in on..
What is the value of the mean square for error (the "within groups" mean square that would be reported in the ANOVA test, and what is the value of the mean square for treatments (the "between groups" mean sqaure) that would be reported in the ANOVA ..
Compare a three-month moving average forecast with an exponential smoothing fore-cast for a = 0.2. Which provides the better forecasts using MSE as the measure of model accuracy?
A normal population has a mean of 75 and a standard deviation of 5. You select a sample of 40. Compute the probability the sample mean is
Estimating a linear regression equation to predict the future values of the dependent variable Y.
What is the probability of selling your home for the median price in your city (My zip code is 91730 Alta Loma). How has the graphical display of data changed in the last 10 years? How will it change in the next 10 years?
Assume that the heights of adult white men have a mean of 67.9 inches and a standard deviation of 2.8 inches. If 64 men are randomly selected, find the probability that they have a mean height greater than 68.9 inches.
Create a 90% confidence interval for true mean amount of cholesterol in chicken eggs.
Prove that there are no integers x, y, and z such that. Show that square root of 2 cubed is an irrational number.
Given CAPM as the benchmark, is either of the two managers over-performing the market? What if you use the Sharpe Ratio as benchmark? Explain the answer carefully.
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