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Question: The following table gives the percentage moisture content of two different types of cheeses determined by randomly sampling batches of cheese from the production process
Suppose we assume the normal regression model for these data with one categorical predictor.
(a) Produce a side-by-side boxplot for the data.
(b) Plot the standardized residuals against Cheese (if you are using a computer for your calculations, also produce a normal probability plot of the standardized residuals). Does this give you grounds for concern that the model assumptions are incorrect?
(c) Carry out a one-way ANOVA to test for any differences among the conditional means of Y given CheeseNote that this is the same as a t-test for the difference in the means.
find an equation of the tangent plane and find symmetric equations of the normal line to the surface zxy at the point
the data set toxemia contains information for a sample of 100 infants born in two hospitals in boston. indicators of a
Set up a hypothesis test - State the null and alternative hypothesis and Confidence intervals of scores and the z or t intervals. Do a P test. Are the two tests consistent
the random variable x has a poisson distribution with mean 40. give an approximate value of the probability p 37 less
Compute the 95% confidence interval for the difference between the two population means if the sample means are 75 and 70 and the margin of error for the CI.
With regard to the standard deviation, illustrate how and why the larger the deviation number, the more difficult it would be to predict an outcome. Use specific examples to illustrate.
compute a 95 confidence interval for the population mean based on the sample 1.5 1.54 1.55 1.51 0.09 0.08 1.55 0.07
Paul has calculated the indifference probability for the lottery having a payoff of $160K with probability p and -$80K with probability (1-p) as follows:
question a statistics instructor is interested in the correlation pearson r between how many hours a student sleeps
Using the raise operation of exercise 2.83, modify the apply-generic procedure so that it coerces its arguments to have the same type by the method of successive raising, as discussed in this section.
Use the Tukey-Kramer procedure to determine which mutual fund type has the highest average percentage gain. Use an experiment-wide error rate of 0.05.
a set of test scores is normally distributed with a mean of 100 and a standard deviation of 15. if cases are drawn
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