Let Yı, Үг, Үз, Ү4, Үş and X1, X2, ..., X, be independent and normally distributed random samplesfrom populations with means A1 = 2 and Az = 8 and variances 12 = 5 and_a22 = k,respectively. Suppose that P(X —Ї > 10) = 0.02275, find the value of az² = k.фундукачии

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Answered: Let Y1, Yz, Y3, Y4, Yş and x1, x2, ...,…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

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A university wants to investigate 'low-performance' modules - where low-performance is defined as a module with an average final mark lower than 50 in a given year. To test whether ECO242 is a 'low-performance' module, a researcher gathers data on final marks for 31 first ECO242 students from past years. If the mean and variance of this sample is estimated, respectively, as 48 and 38, test the hypothesis, at α=0.05, that the true mean is 50 against the hypothesis that it is less than 50. Q1: Is this an example of (two/left/right) tailed test?
A university wants to investigate 'low-performance' modules - where low-performance is defined as a module with an average final mark lower than 50 in a given year. To test whether ECO242 is a 'low-performance' module, a researcher gathers data on final marks for 31 first ECO242 students from past years. If the mean and variance of this sample is estimated, respectively, as 48 and 38, test the hypothesis, at α=0.05, that the true mean is 50 against the hypothesis that it is less than 50. Q3: State the t-test statistic value and the critical value.
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Let Y1, Yz, Y3, Y4, Yş and x1, x2, ..., X, be independent and normally distributed random samples from populations with means A1 = 2 and Az = 8 and variances 12 = 5 and ø22 = k, respectively. Suppose that P(X-Ў> 10) = 0.02275, find the value of az² = k. фруказан чии