Erick3143 Erick3143

27-05-2024
Mathematics

Answered

A random sample of size n₁ = 13 is selected from a normal population with a mean of 74 and a standard deviation of 6. A second random sample of size n₂ = 6 is taken from another normal population with mean 70 and standard deviation 10. Let and be the two sample means. Find:
(a) The probability that exceeds 3.

Answer :

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