18. Define and distinguish between the sample distribution, the sampling distrib

Question

18. Define and distinguish between the sample distribution, the sampling distribution, and the population distribution. How are these three distributions related to each other in inferential statistics? What symbols are used to identify the means and standard deviations of each of the three distributions?
19. Four hundred and thirty two of the 668 respondents questioned said that they favored capital punishment for people convicted of murder. Ten years ago, in response to the same question, 378 out of 703 people were in favor of capital punishment. Has support for capital punishment risen over the ten year period? 20. What is the confidence interval for the mean highest year of school completed?
21. What is the width of the confidence interval? 22. What is the alpha value? 23. What is the confidence level?

Explanation / Answer

Solution-

20. 95% confidence interval for mean highest year of school completed is given in the table as-

(12.88 , 13.19)

21. width of the confidence interval is given by upper bound - lower bound

= 13.19 - 12.88

= 0.31

22. Value of alpha = .05

= 5%

23. Confidence level = 5%

24. Higher confidence level would imply wider confidence interval.

TY!

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