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
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
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.
μx
i](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe42ce73e-afa2-4e56-8592-1ac637ec0644%2Fcce8cc3b-4a15-473d-8627-37a789a90161%2Fq9xhqg_processed.png&w=3840&q=75)
Transcribed Image Text: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.
μx
i
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