Question Details

What is the standard deviation of a sampling distribution called 



1. The mean difference between 10 paired observations is 15 and the SD of differences is
5. The value of statistic t is,
(i) 27 (ii) 9 (iii) 3 (iv) None of these

2. Which of the following symbols represents a population parameter?
(i) SD (ii) σ (iii) r (iv) None of these

3. What does it mean when you calculate a 95% confidence interval?
(i) The process you used will capture the true parameter 95% of the time in the long
run
(ii) You can be “95% confident” that your interval will include the population
parameter
(iii) You can be “5% confident” that your interval will not include the population
parameter
(iv) All of the above statements are true

4. What would happen (other things equal) to a confidence interval if you calculated a 99
percent confidence interval rather than a 95 percent confidence interval?
(i) It will be narrower (ii) it will not change
(iii)The sample size will increase (iv) It will become wider

5. What is the standard deviation of a sampling distribution called ?
(i) Sampling error (ii) Sample error
(iii) Standard error (iv) Simple error



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