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Unformatted text preview: normal distribution with standard deviation $84. A random sample of 20 bills was taken. Find the probability that the sample standard deviation is between than $50.40 and $65.7757. Probability = .095 4. Refer to question 3. Find the probability that the sample standard deviation is less than $105.7972. Circle the correct answer but also show your work. a. .01 b. .05 c. .10 d. .90 e. .95 * f. .99 5. a. If the expected value of the estimator a is equal to the value of the parameter , then a is said to be unbiased . b. If an estimator a is the most efficient of all the estimators under consideration, then a has a smaller variance than do all of the rest of the estimators. c. If the expected value of the estimator a approaches the value of the parameter as the sample size becomes very large, then a is said to be 2 consistent . 3...
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This note was uploaded on 04/07/2008 for the course ECON 2843 taught by Professor Hudgins during the Spring '08 term at The University of Oklahoma.
- Spring '08