Q1. Let X and S? be the mean and variance of independent random samples of size n; from populations with mean H and variance of (i = 1,2), respectively where u, = 20, of = 9, n = 36 and H2 = 18, ož = 16,n2 = 49. Find . %3D a) P(X, > 20.98) b) x such that P(X, < x) = 0.025)

Q: evaluate using the appropriate method or combination of methods.

A:

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A:

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A: y=e3x U=g(x) y=f(U)

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.