Generating function for a random variable
The moment generating function for a random variable X is given by Mx(t) = (1/4)+ (3/4)*(1/(1-t)), t>1. Determine formulas for the density function and distribution function. Sketch graphs for fx and Fx.
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When alternate optimal solutions exist in an LP problem, then The problem will also be unbounded
Your manager, who just read an abridged version of a statistics book, wants you to test hypotheses for the difference in two population means. The sample sizes for each are 23.
Calculate the probability of observing a sample proportion of .17 or less. (b) Based on the probability you computed in part a, would you conclude that fewer than 20 percent of parents who own TV sets equipped with V-chips actually use the devices
An SRS of size 10 is drawn from a population that has a normal distribution. The sample has a mean of 111 and a standard deviation of 4.
In a recent New York City marathon, 25,221 men finished and 253 dropped out. Also, 12,883 women finished and 163 dropped out. We want to use a .01 significance level to test the claim that the rate of those who finish is the same for men and women
Construct the probability mass function(PMF)of X. Construct the cumulative distribution function
At \alpha = 5%, is there a significant difference in proportion? Compute the p-value and round to 4 significant decimal places.
What is the confidence interval estimate of the population mean?
Data was collected overall fitness before and after a physical fitness program. A higher score is indicitive of better fitness. Given the following data was the program effective. Use the paired t test at a= 0.01
What are some examples of two measurement-level (quantitative) variables that are likely to be correlated because they are both changing over time?
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