Question: In discussing the sample size required for obtaining a confidence
In discussing the sample size required for obtaining a confidence interval with a prescribed confidence level and margin of error, we made the following statement: “._______._______. we should be aware that, if the observed value of pˆ is closer to 0.5 than is our educated guess, the margin of error will be larger than desired.” Explain why.
Relevant QuestionsConsider a population in which the proportion of members having a specified attribute is p. Let y be the variable whose value is 1 if a member has the specified attribute and 0 if a member does not. a. If the size of the ...x = 40, n = 50, 95% level. a. Use the one-proportion plus-four z-interval procedure, as discussed on page 449, to find the required confidence interval. b. Compare your result with the corresponding confidence interval ...Of what procedure is Procedure 11.2 a special case? Why do you think that is so? People who were born between 1978 and 1983 are sometimes classified by demographers as belonging to Generation Y. According to a Forrester Research survey published in American Demographics (Vol. 22(1), p. 12), of 850 ...In the article “Drowning Deaths of Zero to Five Year Old Children in Victorian Dams, 1989–2001” (Australian Journal of Rural Health, Vol. 13, Issue 5, pp. 300–308), L. Bugeja and R. Franklin examined drowning deaths ...
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