Reading proficiency: An educator wants to construct a 99.9% confidence interval for the proportion of elementary school children in Colorado who are proficient in reading. Part: 0 / 3 0 of 3 Parts Complete Part 1 of 3 (a) The results of a recent statewide test suggested that the proportion is 0.73 . Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of 0.07 ? A sample of elementary school children is needed to obtain a 99.9% confidence interval with a margin of error of 0.07
Reading proficiency: An educator wants to construct a 99.9% confidence interval for the proportion of elementary school children in Colorado who are proficient in reading. Part: 0 / 3 0 of 3 Parts Complete Part 1 of 3 (a) The results of a recent statewide test suggested that the proportion is 0.73 . Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of 0.07 ? A sample of elementary school children is needed to obtain a 99.9% confidence interval with a margin of error of 0.07
Reading proficiency: An educator wants to construct a 99.9% confidence interval for the proportion of elementary school children in Colorado who are proficient in reading. Part: 0 / 3 0 of 3 Parts Complete Part 1 of 3 (a) The results of a recent statewide test suggested that the proportion is 0.73 . Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of 0.07 ? A sample of elementary school children is needed to obtain a 99.9% confidence interval with a margin of error of 0.07
Reading proficiency: An educator wants to construct a
99.9%
confidence interval for the proportion of elementary school children in Colorado who are proficient in reading.
Part: 0 / 3
0 of 3 Parts Complete
Part 1 of 3
(a) The results of a recent statewide test suggested that the proportion is
0.73
. Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of
0.07
?
A sample of
elementary school children is needed to obtain a
99.9%
confidence interval with a margin of error of
0.07
.
Definition Definition Number of subjects or observations included in a study. A large sample size typically provides more reliable results and better representation of the population. As sample size and width of confidence interval are inversely related, if the sample size is increased, the width of the confidence interval decreases.
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