. You are looking at a population and are interested in the proportion p that has a...
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You are looking at a population and are interested in the proportion p that has a certain characteristic. Unknown to you, this population proportion is p=0.60. You have taken a random sample of size - 120 from the population and found that the proportion of the sample that has the characteristic is p=0.66. Your sample is Sample 1 in the table below. (In the table, Sample 1 is written "S1", Sample 2 is written "S2", etc.) (a) Based on Sample 1, graph the 75% and 95% confidence intervals for the population proportion. Use 1.150 for the critical value for the 75% confidence interval, and use 1.960 for the critical value for the 95% confidence interval. (If necessary, consult a list of formulas.) • Enter the lower and upper limits on the graphs to show each confidence interval. Write your answers with two decimal places. • For the points (and), enter the population proportion, 0.60. 0.39 0.39 75% confidence interval $1 0.66 S2 0.58 0.78 75% 75% 95% 95% lower upper lower upper limit limit limit limit ? ? ? ? HH 0.78 0.39 +++ 0.39 95% confidence interval 75% confidence intervals 0.58 (b) Press the "Generate Samples" button below to simulate taking 19 more samples of size - 120 from the same population. Notice that the confidence intervals for these samples are drawn automatically. Then complete parts (c) and (d) below the table. 0.78 95% confidence intervals 0.78 ? You are looking at a population and are interested in the proportion p that has a certain characteristic. Unknown to you, this population proportion is p=0.60. You have taken a random sample of size - 120 from the population and found that the proportion of the sample that has the characteristic is p=0.66. Your sample is Sample 1 in the table below. (In the table, Sample 1 is written "S1", Sample 2 is written "S2", etc.) (a) Based on Sample 1, graph the 75% and 95% confidence intervals for the population proportion. Use 1.150 for the critical value for the 75% confidence interval, and use 1.960 for the critical value for the 95% confidence interval. (If necessary, consult a list of formulas.) • Enter the lower and upper limits on the graphs to show each confidence interval. Write your answers with two decimal places. • For the points (and), enter the population proportion, 0.60. 0.39 0.39 75% confidence interval $1 0.66 S2 0.58 0.78 75% 75% 95% 95% lower upper lower upper limit limit limit limit ? ? ? ? HH 0.78 0.39 +++ 0.39 95% confidence interval 75% confidence intervals 0.58 (b) Press the "Generate Samples" button below to simulate taking 19 more samples of size - 120 from the same population. Notice that the confidence intervals for these samples are drawn automatically. Then complete parts (c) and (d) below the table. 0.78 95% confidence intervals 0.78 ?
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Question c The proportion of the samples that include the population proportion should be near to 95 ... View the full answer
Related Book For
Fundamentals of corporate finance
ISBN: 978-0073382395
9th edition
Authors: Stephen Ross, Randolph Westerfield, Bradford Jordan
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