Question: 1 (rt-1) unbiased estimator for population variance? Why or why not? Let S be the sample standard deviation. What is the expected value of 5?

1 (rt-1) unbiased estimator for population variance? Why or why not? Let S be the sample standard deviation. What is the expected value of 5? Is 5 an unbiased estimator for population standard deviation? Why or why not? 23Let .S'2 = \"9:10\";- 132 be the sample variance. What is the expected value of $2? is 52 an 24-Find an upper bound on P[ IX ,1: I 2 4] in [23} using the Chebyshev inequality. Suppose sampling distribution of sample mean with a sample size of 25 is considered. Find an upper bound on P( L}? ,{1| :4) using the Chebyshev inequality

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