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Suppose X is a vector of IID random variables where each element has some PDF,
Find an example PDF such that the median is a better estimate of the mean than the sample mean.
If 15 subjects take a pre-test and a post-test with a mean change score of 1.5, and if the standard deviation of the comparison distribution is calculated to be .5, what is the t score?
What was the probability that a student worked a part time job or made the Dean's list. Interpret the results.
wayne collier designed an experiment to measure the fuel efficiency of his family car under different tire pressures.
1. Let P be a regular transition matrix and let w be the unique non-zero fixed vector of P. Show that no entry of w is 0.
Determine the values of mean M and standard deviation s for original sample?
3 of 20 students are selected to a committee. they will be president vice president and secretary. how many different
What is the probability that the person guessing the numbers guesses it incorrectly between 8 and 20 times out of the 34 times the game is played?
Find the Probability and inverse probability for the given Normal distribution.
For the following exercises, you do not use the Premiere Products database. 1. The DBA asks for your help in planning the data archive for the following Premiere Products database:
Casting aluminum: is there a relationship? Figure 24.13 leaves out the t statistics and their P-values. Based on the information in the output, test the hypothesis that there is no straight-line relationship between thickness and gate velocity. S..
Suppose we have a population with the mean of 100 and a standard deviation of 28.We take repeated samples of size 49 and calculate the mean of each sample to form a sampling distribution. Find the mean and standard deviation of the sampling distrib..
What is a nonparametric procedure? Describe specifically when you would utilize a nonparametric test. Under what conditions should you use the Wilcoxon sum rank test?
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