A random sample of n = 4 scores is obtained from a normal population with u = 30 and o = 8. What is the probability that the sample mean will be less than M = 22? O p = 0.00003 p = 0.0228

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A: Note: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: A sample of n = 4 scores is selected from a population with μ = 40 with σ = 8, and the sample mean…

A: The Expected value for the sample mean is 40 and it is obtained below:

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Q: sample mean greater than 34? b) selecting a sample mean with a z-score greater than z = 2.00?…

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Q: 2. A sample is selected from a population with a mean = 8. 4 scores, what is the expected value of M…

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A: Image is attached with detailed solution.

Q: A sample is selected from a population with a mean of mu= 65 and a standard deviation of sigma=15.…

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