Show that for & -distribution with n'dif.,about meath 13 given by:√n r[(1-1)/2] / √55/4/2mean deviation

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Answered: Show that for +-distribution with…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Suppose the time that it takes for a certain infection to be cured is Normally distributed 1 day. The drug manufacturer advertises that it with mean (in days) µ and standard deviation o works in 5 days, on average, but measurements on a random sample of 200 patients gave a mean infection time of ī = 5.2 days. Is this evidence that the mean time to be cured is actually more than advertised? (a) To answer this, test the following hypotheses at significance level a= 0.05. H,: µ= 5, Ha: µ> 5 (b) In the context of this example, describe in words the meaning of type I and type II errors.
4.1 Suppose X ~ N(15, 6). What value of x is 1.5 standard deviations to the left of the mean? Round to one decimal place
If bone density is normally distributed with 0 for the mean and 1 for the standard deviation, what is the probaility that a population has a bone density between the z scores of -0.84 and 1.2?
If the time between phone calls has exponential distribution with standard deviation 1.34 minutes. The value of lambda is (answer to 3 decimal places)
Suppose that X follows a lognormal distribution with w^2=4 and E(X)=10,000 a. Find the parameter theta for the distribution. Use 4 digits after the decimal point: b. Find the standard deviation of the process: Use 4 digits after the decimal point:
4. 65th Pg. 59, 1. 7. 19. * Find the of the distribution having pot F(x) = 1x1/4₂ Percentile where -a, < x < 2, f(x) = 0, elsewhere.
3.1 Suppose X ~ N(18, 7). What value of x has a z-score of -2.16? Round to 2 decimal places..
A sample of 126 was found to have a standard deviation of 5.9. An interval estimate for ?μ based on the sample was (27.576, 29.464). What is the margin of error from this estimate? What was the ??,?tν,α that was used to get this interval extimate?
9.51167x10-2/3.32x10-3
Suppose x has a distribution with a mean of 80 and a standard deviation of 45. Random samples of size n = 36 are drawn. Find P(x < 87.5) Please show the steps to finding the answer and use a ti-83+ calculator since this is what I am working with.

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Show that for +-distribution with n'dof., about meath 13 given by: √n [[(1-1)/2] / √5564/2 mean deviation