A random sample of 620 in size is taken from a population with a mean of 9720 and unknown variance. The sample variance wasfound out to be 600.(a) Find the point estimate of the population variance.☎² = i(b) Find the mean of the sampling distribution of the sample mean.μxi

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Answered: A random sample of 620 in size is taken…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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A random sample of 620 in size is taken from a population with a mean of 9720 and unknown variance. The sample variance was found out to be 600. (a) Find the point estimate of the population variance. ² = i (b) Find the mean of the sampling distribution of the sample mean. MX i