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1. Assume that the conclusion from an ANOVA is that the null hypothesis is rejected, in other words that the 9 population means (from equal sized samples) are not all equal. What should we expect?
2. Suppose that the conclusion from an ANOVA is that the null hypothesis is rejected, in other words that the 6 population means are not all equal. What should we expect?
Show the sampling distribution of line over x where line over x is the sample mean annual cost of automobile insurance.
What are examples in which regression analysis is used for forecasting? What are some primary and secondary sources of data that may be used in correlation and regression analysis?
To estimate the mean of the population from sample information, we need to calculate the standard deviation of the distribution of the sample means around the population mean.
Use a .10 level of significance to test the claim that the variance of all scores in the population is more than 9.
Carry out a test of hypothesis on each of regression coefficients. Could you delete any of the variables?
A partial computer output from a regression analysis as follows. The regression equation is:
The resistances of carbon resistors of 1500 ohm nominal value are normally distributed with µ = 1500 and standard deviation = 200. What proportion of resistors is expected to have resistance greater than 1150 ohm?
Perform the trend analysis of Pf with incrementally increasing number of the simulation cycles, and calculate the statistical uncertainty in the estimate expressed as the coefficient of variation.
Find a point estimate of the population mean. Find the 95% confidence interval of the population mean. Assume the variable is normally distributed.
Develop a mathematical programming model and solve. Discuss your results [total profits, total costs, etc].
Is this enough evidence to support Union's position? Use significance level of a = 0.05. You may suppose the mean annual salaries are normally distributed.
How many units of capacity should be built to minimize the total cost of providing capacity plus lost sales?
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