Suppose you wish to know the proportion of registered voters in CA who support a particular...
Suppose you wish to know the proportion of registered voters in CA who support a particular ballot measure. Further suppose that some initial estimates indicate that the proportion of registered voters who support the measure is approximately 0.58. Determine the sample size required to estimate the true proportion if you want to be 98% confident that your estimate of the proportion is within 0.02 (two percentage points). You need to sample _____ registered voters in order to be 98% confident that your estimate is not off my more than 2%.
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Suppose you wish to know the proportion of registered voters in CA who support a particular...
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...
In a random sample of 100 registered voters, 20 say they plan to vote for Candidate A. Determine a 95% confidence interval for the proportion of all the registered voters who will vote for Candida...
In a random sample of 100 registered voters, 20 say they plan to vote for Candidate A.Determine a 95% confidence interval for the proportion of all the registered voters who will vote for Candidate A.You are interested in knowing support for candidate by gender to provide strategic advice to candidate B. Suppose your guess based on previous knowledge is that female support for candidate B is around 20 percent, and male support for candidate B is around 50 percent. Suppose...
Suppose you wish to determine the proportion of college students nationally who receive some form of...
Suppose you wish to determine the proportion of college students nationally who receive some form of financial aid. You want to be 98% confident of your results and have a maximum error of 5%. Calculate the minimum sample size that you must have to meet these requirements, given that the financial aid office at a local institution estimates the percentage to be 78%.
3 4) Suppose you wish to determine the proportion of college students in your state who...
3 4) Suppose you wish to determine the proportion of college students in your state who receive some form of financial aid. You want to be 98% confident of your results and have a maximum error of 5%. Calculate the minimum sample size needed to meet these requirements given that the financial aid office at a local institution estimates the percentage to be 78%. I
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
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. You have no preconceived idea of what that proportion might be. What sample size is needed if you wish to be 98 % confident that your estimate is within 0.05 of the true proportion? A sample size of nothing is needed. (Round up to the nearest whole number.)
A survey designed to obtain information on the proportion of all registered voters who are in...
A survey designed to obtain information on the proportion of all registered voters who are in favor of constitutional amendment requiring a balanced budget results in a sample size of n=500. Of the 500 voters sampled, 310 are in favor of such a constitutional amendment. A.What is the point estimate of the proportion of all registered voters who are in favor of a constitutional amendment requiring a balanced budget? B. Calculate and interpret the 99% confidence interval for p.
A pollster wants to find a 95% confidence interval for the proportion of registered voters who...
A pollster wants to find a 95% confidence interval for the proportion of registered voters who support a certain candidate. If her confidence interval has to have a margin of error of at most 5.0%, then what’s the smallest random sample of registered voters she can poll?
Suppose that the proportion of registered Republican voters in some town is 30%. If you sample...
Suppose that the proportion of registered Republican voters in some town is 30%. If you sample voters from this town at random until you find 2 Repub- licans, what is the expected value of the number of voters you will sample? What is the probability that you will have to sample more than 9 voters?
Suppose we conduct a poll to estimate the proportion of voters who favor a major presidential...
Suppose we conduct a poll to estimate the proportion of voters who favor a major presidential candidate. Assuming that 50 percent of the electorate could be in favor of the candidate, determine the sample size needed so that we are 95 percent confident that pˆ , the sample proportion of voters who favor the candidate, is within a margin of error of .01 of p, the population proportion of all voters who are in favor of the candidate. n =...
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...
3 4) Suppose you wish to determine the proportion of college students in your state who receive some form of financial aid. You want to be 98% confident of your results and have a maximum error of 5%. Calculate the minimum sample size needed to meet these requirements given that the financial aid office at a local institution estimates the percentage to be 78%. I
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 that the proportion of registered Republican voters in some town is 30%. If you sample voters from this town at random until you find 2 Repub- licans, what is the expected value of the number of voters you will sample? What is the probability that you will have to sample more than 9 voters?
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