Exit polling is a popular technique used to determine the outcome of an election prior to results being tallied. Suppose a referendum to increase funding for education is on the ballot in a large town (voting population over 100,000). An exit poll of 400 voters finds that 196 voted for the referendum. How likely are the results of your sample if the population proportion of voters in the town in favor of the referendum is 0.51? Based on your result, comment on the dangers of using exit polling to call elections.---How likely are the results of your sample if the population proportion of voters in the town in favor of the referendum is 0.51?The probability that fewer than 196 people voted for the referendum is □(Round to four decimal places as needed.)

Given that Population proportion p=0.51 Sample size n =400

Answered: Dolling is a popular technique used to…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 85%. You would like to be 95% confident that your estimate is within 3.5% of the true population proportion. How large of a sample size is required? Do not round mid- calculation. Submit Question IN
Find test statistic, critical values, & Conclusion
A survey agency has asked students to speculate on whether hot dog is a sandwich or not. Assume half of the survey participants believe that hot dog is a sandwich, while the other half believe it is not. How large a sample would the agency need to select to be 93% confident that the margin of error equals 0.05?
Colding Industries has decided to use a p-Chart to monitor the proportion of defective galvanized pipes produced by their production process. The control limits on these charts will be designed to include 95% of the sample proportions when the process is In Control. The quality control manager randomly samples 150 galvanized pipes at 16 successively selected time periods and counts the number of defective galvanized pipes in the sample. 1.What is the Center Line of the control chart? Round to three decimal places. 2.What is the z-value associated with the level of significance stated in the problem? Round to two decimal places. 3.What is the Upper Control Limit? Round to three decimal places. 4.What is the Lower Control Limit? Round to three decimal places. 5.At the next time period, 150 galvanized pipes are sampled and 8 defective galvanized pipes are detected. Is this instance out of control or in control? 6.At the next time period, 150 galvanized pipes are sampled and 15 defective…
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Based on historical data at Portland State University, we believe that 44% of first year students do not visit their advisors regularly. For this year, you would like to obtain a new sample to estimate the proportion of first year students who do not visit their advisors regularly. You would like to be 99% confident that your estimate is within 4% of the true population proportion. How large of a sample size is required? Do not round mid-calculation. Give answer in whole people. n=
Define three measures one can take to increase the power of an experiment. Explain why your measures result in greater power?
A report says that the average amount of time a 10-year-old American child spends playing outdoors per day is between 20.5 and 25.66 minutes. What is the margin of error in this report?
Wildlife biologist inspects 153 deer taken by hunters and find 32 of them carrying Lyme disease ticks. 1). If the scientist want to estimate the proportion of the deer that carry Lyme disease ticks within 2% with 90% confidence how many deer should they sample?
Fear of the dark is quite common among children. However, what about adults? One polling agency released the results of a survey that asked people over 30 years old if they keep the lights on at night. Among 452 respondents, 34% indeed leave the light on when going to sleep. What does this margin of error tell you about the percentage of adults who keep the lights on at night? We can be 95% confident that somewhere between % and % of adults keep the lights on at night.
A political candidate has asked you to conduct a poll to determine what percentage of people support her.If the candidate only wants a 3% margin of error at a 99% confidence level, what is the minimum sample size needed for the study?Give your answer as a whole number.

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