EGR 260 Winter 2017 Homework #10 Due 4/3/17
2) (40 points) Answer the following (all ! point = LLDefine the except 4,3,2 points):
1. Define the sample mean and the population mean.
2. Define a point estimator of some population parameter in your own words (don't copy from the book or notes).
3. What does the central limit theorem tell us?
4. What is an unbiased estimator of a parameter?
5. If a point estimator Z of Z is not unbiased, what is the bias?
6. Define the standard error of an estimator.
7. What is the sample mean for the N observations in A sample, if the N observations are XiXz?
8. Give the sample variance for the N observations in A sample.
9. If a population has mean and standard deviation values of H and respectively, what are the expected unbiased estimators X and of H and respectively?