A sample of n 12 scores is selected from a normal population with u = 50 and o = 10. a. What iš the probability that the sample mean will be greater than 45? b. What is the probability that the sample mean will be less than 42?

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Q: 12.. For a normal population with u = 100 and o = 20: a. What is the probability of obtaining a…

A: From the provided information, Mean (µ) = 100 Standard deviation (σ) = 20 X ~N (100, 20)

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A: Sample size, n = 4 Mean = 40 Standard deviation = 8 Sample mean = 43

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A: A random sample of n = 4 scores is obtained from a normal population with u = 30 and σ =  8.

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Q: A sample of n = 100 scores is selected from a normal population with µ = 75 and σ = 11. The…

A: Given data n=100μ=75σ=11M=78

Q: 1) The population of SAT scores is normal with u 500 and a- 100. If you get a sample of n 25…

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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.