Imagine you have a population of 100000 cases For which of t

Imagine you have a population of 100,000 cases. For which of the following degrees of freedom, can you generate the most accurate estimation of the population parameter?

10

20

50

2000

Two hundred students took a standard chemistry test. You sampled 20 students to estimate the average score and the standard deviation. How many degrees of freedom were there in the estimation of the standard deviation?

21

20

19

40

Which of the following descriptions of

Solution

1) Question is not clear from the context.

2) 19

3) A sampling method is biased if each element does not have an equal chance of being selected,

    An estimator is biased if it systematically overestimates or underestimates the parameter it is estimating

An estimator is biased if it overestimates but does not underestimates the parameter

4)Standard error