Chapter Problems 7 12 c. 12 12 c., 15. a. (Compute bias and variance) b. (Compute bias and variance), c. 7 20, 21, 22 7 36, Also compute the CRLB in both a. and b. 7 38, 39 7 41. Show the the estimator is unbiased. Later you will show that it's best. Then calculate its variance and compare to the CRLB. Verify the value of the CRLB in the book. Hint