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Consider the distribution fX(x) = θx^(θ-1) where 0 < x < 1 and 0 < θ < ∞.
a) Show that this is a pdf.
b) Compute the mean and variance of X.
c) Find the pdf of the transformation Y = X^2 and verify that it integrates to one.
d) Using your results in c), compute the mean of Y . How does this compare with your results in b)?
Suppose you wish to test a one-tail hypothesis where you reject H0 only in the lower tail. You calculate ZSTAT = 1.38. What is the statistical decision if you test the null hypothesis at the 0.01 level of significance?
Identify at least 2 variables for which you would utilize a repeated-measures ANOVA in your analysis. Describe the variables and their scale of measurement.
Assume that you have received a job offer to be a manager within the Virgin Group. Determine the criteria you would use to evaluate whether Richard Branson
Quality control. Production managers on an assembly line must monitor the output to be sure that the level of defective products remains small.
Maze. Psychology experiments sometimes involve testing the ability of rats to navigate mazes. The mazes are classified according to difficulty.
part i statistical measures statistics is a very powerful topic that is used on a daily basis in many situations. for
In 2001 a national vital statistics report indicated that about 3% of all births produced twins. Is the rate of twin births the same among very young mothers?
a. Draw a table that includes the conditional proportions for boys and for girls. b. Create a graph with bars showing the proportions for all six conditions.
A fair coin is flipped indefinitely. What is the probability of (a) at least one head in the first n flips;
Economists believe the dollar has a 0.23 chance of appreciating against European currencies soon. What is the probability the ships will sail full?
The following table describes the asset allocation of your portfolio with the corresponding return in percentage, X, and the proportion of that specific asset in the portfolio, P(X).
suppose that the skewness associated with the residuals from a multiple regression of 88 observations is -0.3 and the
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