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The main purpose of this exercise is to convince you that LSD should not be used
In anova.sav you find simulated data for a normally distributed variable Z ~ N(µ,1). In groups 1 to 6 µ=0, while in group 7 µ=0.5.
How many pairs are there? Verify from the output achieved above that this is the factor used to achieve Bonferroni p-values from LSD p-values. What pairs are significant according to LSD and what pairs are significant according to Bonferroni?
To select a _________ sample, an intact group of subjects that represent the population is selected.
The Kruskal-Wallis rank test is a nonparametric replacement - The Wilcoxon rank sum test tests a null hypothesis
Assuming that the Poisson distribution is a plausible model in describing variability of asbestos fiber counts in filters; derive a 95% confidence interval indicating the variability in the average number in asbestos fibers.
I have computed an analysis of variance for three groups with 10 observations per group. Evaluate the degrees of freedom for the F test
We code middle-aged Americans as 1 and senior citizens as 0, the logistic regression model for senior citizens
What is the probability that the cereal would be high fiber? In other words, what is P (high fiber)?
Compute and interpret each of the statistics in parts(a) through (f) Mean and Median.
Suppose we wish to test the null hypothesis that there are no differences among the proportion of men and women who developed a rash. Evaluate the P-value of the chi-square test of this hypothesis.
Which statement is true for a statistical study?
Gigi has rolled a natural on four straight tosses of the dice. This excites the gamblers standing around the table.
If one person is selected at random, what is the probability that person is Female?
Formulate the hypotheses that can be used to determine whether union membership increased in 2006.
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