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For a Gaussian random variable, derive expressions for the coefficient of skewness and the coefficient of kurtosis in terms of the mean and variance µ and σ2.
What did you assume to construct these control limits (be specific)? Check the assumptions. Given the information in the base period, how comfortable are you with these assumptions?
For a normal distribution,
Using the .05 level of significance, what should we conclude about the theory that 24 hours is the natural cycle? (That is, does the average cycle length under these conditions differ significantly from 24 hours?)
Discuss three measures of central tendency for the dependent variable. Is this distribution skewed? If so, in what direction? Explain your answer. Why would you NOT attempt to determine the central tendency of the independent variables?
Find and interpret the range of the employees salaries and find the mean, variance and the standard deviation of number of successful surgeries in January 2016.
We want to test the hypothesis that the population variances are equal.
q1. find the probabilities for the following discrete random variablesa. among a shipment of 5000 tires 1000 are
In testing a new drug, researchers found that 20% of all patients using it will have a mild side effect. A random sample of 15 patients using the drug is selected. Find the probability that:
Hypothesis test for dependent samples and Has satisfaction with MHMR services changed since the January survey
you are standing in line at the super market when a scientist standing behind you strikes up a conversation with you.
8. What will be the null hypothesis, the alternative hypothesis, and, hence, the "tailedness" of the test (left-tailed, right-tailed, or two-tailed)? 9. What is be the corresponding test statistics? 10. What is the corresponding p-value of the hypo..
The Red Cross honors and recognizes its best volunteers from time to time. One of the Red Cross offices has received 12 nominations for the next group of 4 volunteers to be recognized. Eight of these 12 nominated volunteers are female. If the Red ..
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