Random sample is attained from normal population with the, Ask an Expert

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1) Random sample is attained from normal population with the mean of µ = 80 and standard deviation of σ = 8. Which of the following outcomes is more probable? Describe your answer.

a) A sample mean greater than 86 for sample of n = 4 scores.

b) A sample mean greater than 84 for sample of n = 16 scores.

2) Distribution of SAT scores is normal with the mean of µ = 500 and standard deviation of σ = 100. If mean SAT score is calculated from a sample of n = 100 students from this population.

a) What range of values must have the sample mean 95% of the time?

b) What range of values must have the sample mean 99% of the time?

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Basic Finance, Finance

Category:- Basic Finance
Reference No.:- M9161792

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