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USA Today conducted a survey asking readers, "What is the most hilarious thing that has ever happened to you en route to or during a business trip?"
a. What kind of sampling method is this?
b. Are the results likely to be biased? Explain.
Simulate 50 observations from a normal distribution with mean 0 and standard deviation 1. make a normal plot.
In this research report you will be analysing a set of data of which can be found in an EXCEL file available for download in the Assessment section of the Blackboard site.
There is no proof the new policy is more effective, but we cannot finish the policy has no effect on smog. Interpretation of P-value for the given context.
Compute the coefficient of correlation and the coefficient of determination and determine the regression equation.
Problem based on decision tree - Evaluate the strategy that maximizes the manufacturer's expected net earnings.
Provide a discussion that supports the assumption that the variance of savings increases with family income.
Is the distinction among various parts of the bell-shaped curve arbitrary or is there certain logical and rational principle involved that creates such distinctive demarcations shown in a chart like this?
A portfolio p of consisting 60% of stock X and 40% of stock Y, has a correlation ρpM = 0.62 with the market. What is the portfolio volatility? Statement on the diversification effect.
In textile industry, a manufacturer is interested in the number of blemishes or flaws occurring in each 100 feet of material. Of the following probability distributions, the one that most applies to this situation is the.
Whirltag claims that the useful lifetime of its dishwashers is normally distributed with a mean of 3 years and a standard deviation 1 year.
Supposes that the diameter of bearings are independent normally distributed random variables with mean µB = 1.005cm and variance σ²B = (0.003)² cm² . The diameter of shafts are independent normally distributed random variables having mean µB = 0.9..
Suppose the annual return on XYZ stock follows a normal distribution with mean 0.12 and standard deviation 0.30.
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