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Suppose two researchers want to estimate the proportion of American college students who favor abolishing the...
2. Suppose that a random sample of 41 state college students is asked to measure the...
2. Suppose that a random sample of 41 state college students is asked to measure the length of their right foot in centimeters. A 90% confidence interval for the mean foot length for students at this university turns out to be (21.709, 25.091). If we now calculated a 95% confidence interval, would the new confidence interval be wider than or narrower than or the same as the original? b. Suppose two researchers want to estimate the proportion of American college...
3. A senator wishes to estimate the proportion of United States voters who favor abolishing the...
3. A senator wishes to estimate the proportion of United States voters who favor abolishing the Electoral College. How large a sample is needed in order to be 99% confident that the sample proportion will not differ from the true proportion by more than 4%? OA. 849 OB. 17 C. 2,073 D. 1,037 abould be
In a study of government financial aid for college students, researchers needed to estimate the proportion...
In a study of government financial aid for college students, researchers needed to estimate the proportion of full-time college students who earn a bachelor's degree in 4 years or less. Assuming a confidence level of 90%, find the sample size needed to estimate that proportion with a 0.03 margin of error in two cases: (1) no assumptions are made about the value of the sample proportion, and (2) prior studies have shown that roughly 60% of full-time students earn a...
A researcher found a 95% confidence interval for the proportion of college students who believe in...
A researcher found a 95% confidence interval for the proportion of college students who believe in ghosts. The interval was (0.6525, 0.7535). What is the margin of error for this estimate?
Suppose you want to estimate the proportion of traditional college students on your campus who own...
Suppose you want to estimate the proportion of traditional college students on your campus who own their own car. From research on other college campuses, you believe the proportion will be near 25%. What sample size is needed if you wish to be 99% confident that your estimate is within 0.02 of the true proportion? A sample size of is needed. (Doudun to the noroet whole number
A researcher wants to use a confidence interval to estimate the proportion of college students in...
A researcher wants to use a confidence interval to estimate the proportion of college students in his state who plan to vote in the 2020 presidential election. He plans to randomly sample 120 college students, and plans to construct a 95% or 99% confidence interval. Which of these confidence intervals will be wider, and why? Group of answer choices _99%. As the level of confidence increases, the width of the confidence interval increases. _95%. As the level of confidence decreases,...
You want to estimate the proportion of students at OSU who have ever used an online...
You want to estimate the proportion of students at OSU who have ever used an online dating app. You select a random sample of 140 OSU students and find that 43% have used an online dating app. If you want to construct a 99% confidence interval, what will the margin of error be? Try not to do a lot of rounding along the way until you get to the end of your calculations.
Suppose you want to estimate the proportion of traditional college students on your campus who own...
Suppose you want to estimate the proportion of traditional
college students on your campus who own their own car. From
research on other college campuses, you believe the proportion
will be near 30%.What sample size is needed if you wish to be 98%
confident that your estimate is within 0.02 of the true
proportion?
Suppose you want to estimate the proportion of traditional college students on your campus who own their own car. From research on other college campuses, you...
What proportion of college students drink coffee every day? A 99% confidence interval for the proportion...
What proportion of college students drink coffee every day? A 99% confidence interval for the proportion of college students who say they drink coffee every day was constructed and it was found to be from 0.38 to 0.52. Based on this interval, we know the margin of error must be A 0.07. B 0.01. C 0.14. D It’s impossible to answer this question without more information. E 0.03.
A newspaper conducts a poll to determine the proportion of voters who favor passage of a...
A newspaper conducts a poll to determine the proportion of voters who favor passage of a new handgun safety law. From the poll results, a 95% confidence interval estimate of the proportion is found: (0.514, 0.574). What proportion of those polled favored the safety law? (think point estimate) Answer: What was the margin of error for their results? Answer What was the margin of error for their results? Answer: If the confidence level was raised to 98%, but the sample...
2. Suppose that a random sample of 41 state college students is asked to measure the length of their right foot in centimeters. A 90% confidence interval for the mean foot length for students at this university turns out to be (21.709, 25.091). If we now calculated a 95% confidence interval, would the new confidence interval be wider than or narrower than or the same as the original? b. Suppose two researchers want to estimate the proportion of American college...
3. A senator wishes to estimate the proportion of United States voters who favor abolishing the Electoral College. How large a sample is needed in order to be 99% confident that the sample proportion will not differ from the true proportion by more than 4%? OA. 849 OB. 17 C. 2,073 D. 1,037 abould be
Suppose you want to estimate the proportion of traditional college students on your campus who own their own car. From research on other college campuses, you believe the proportion will be near 25%. What sample size is needed if you wish to be 99% confident that your estimate is within 0.02 of the true proportion? A sample size of is needed. (Doudun to the noroet whole number
Suppose you want to estimate the proportion of traditional
college students on your campus who own their own car. From
research on other college campuses, you believe the proportion
will be near 30%.What sample size is needed if you wish to be 98%
confident that your estimate is within 0.02 of the true
proportion?
Suppose you want to estimate the proportion of traditional college students on your campus who own their own car. From research on other college campuses, you...
A newspaper conducts a poll to determine the proportion of voters who favor passage of a new handgun safety law. From the poll results, a 95% confidence interval estimate of the proportion is found: (0.514, 0.574). What proportion of those polled favored the safety law? (think point estimate) Answer: What was the margin of error for their results? Answer What was the margin of error for their results? Answer: If the confidence level was raised to 98%, but the sample...
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