Suppose you take a sample of size 4 from a population that is normally distributed with...

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Suppose you take a sample of size 4 from a population that is normally distributed with...

Suppose you take a sample of size 4 from a population that is normally distributed with a known standard deviation of 10. You get a sample mean of 20. What is the probability the population mean is 30 or more?

Question 4 options:

	0.025
	0.05
	0.5
	0.95
	Either 0 or 1, but we don't know which.

math Statistics-And-Probability

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Answer 1

Answer #1

the pdf of normal distribution is = 1/0 * V2n * e^ -(x-u)^2/ 20^2 standard normal distribution is a normal distribution with

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Answer 2

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