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The envelope of a narrow-band noise is sampled periodically, the samples being sufficiently far apart to assure independence. In this way n independent random variables X1, X2,..........., Xn are observed, each of which is Rayleigh distributed with parameter σ. Let Y = maximum (X1, X2,...............,Xn) be the largest value in the sample. Find the probability density function of Y.
Airplane manufacturers use only slow-burning materials. For the plastic in coffee pots the maximum burn rate is 4 inches per minute.
She surveys 100 randomly selected families and finds the mean income to be $96,321 with a standard deviation of $9555.With a0.05, is she correct?
Find the population standard deviation using the formula containing the mean (the original formula).
Findout the probability using normal approximation for the provided values. Findout the specified probability from a table of Normal probabilities.
a sales manager collected the following data on annual sales and years of experience. sales
a random variable y has unknown mean micro and standard deviation 20. what is the sample size n needed so that the 99
What's the most appropriate procedure for evaluating the relationship between tenure and divorce? What is the correlation and how can it be interpreted in terms of magnitude, direction and practical importance?
A sampling (or coupon collecting) problem. Consider an urn that contains rM balls, for given integers rand M. Suppose that for each integer j, 1 to M
If the effective equivalent annual interest rate is 22.2%, and interest is compounded quarterly, what is the corresponding nominal annual interest rate?
when a newspaper article reports the results of a study and draws a conclusion without stating if the results are
The problem is to perform a simulated experiment, with the help of variance-reducing techniques, for estimating the mean of this distribution. To provide a standard of comparison, also derive the mean analytically.
Test the hypothesis that there is no difference between the means of retailers (α= .05). Select a multiple comparison test, if necessary, to determine which groups differ in mean sales (α= .05).
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