# Question: A random sample of size n 81 is taken

A random sample of size n = 81 is taken from an infinite population with the mean µ = 128 and the standard deviation σ = 6.3. With what probability can we assert that the value we obtain for X will not fall between 126.6 and 129.4 if we use

(a) Chebyshev’s theorem;

(b) The central limit theorem?

(a) Chebyshev’s theorem;

(b) The central limit theorem?

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