Calculus and Above

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The Gallup organization conducted a phone survey from June
The Gallup organization conducted a phone survey from June 9-12, 2011. Researchers at Gallup chose a random sample of 961 American adults. The 1020 American adults were asked to respond to the followi… read more
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7. Thinking that she's all great, the school social worker
7. Thinking that she's all great, the school social worker decides to run for school board. A couple weeks before the election, the local newspaper takes a poll of likely voters, and finds that 52% fa… read more
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7. Thinking that she's all great, the school social worker
7. Thinking that she's all great, the school social worker decides to run for school board. A couple weeks before the election, the local newspaper takes a poll of likely voters, and finds that 52% fa… read more
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Exit polling is a popular technique used to determine the
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… read more
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5. We want to study whether people in Minnesota are in favor
5. We want to study whether people in Minnesota are in favor of a public health care option. A recent poll of a sample of Minnesotans indicates that 60% favor this plan. We also know that the standard error is 1.2. Construct a 95% confidence interval for this measurement (be sure to do both upper and lower limits). 6. How would you interpret the results from Question 5? … read more
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Which has a greater probability of sampling error: an N of
Which has a greater probability of sampling error: an N of 10 or an N of 100? … read more
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In a political poll, 598 registered voters and surveyed, and
In a political poll, 598 registered voters and surveyed, and 280 say that they plan to vote for Candidate A. Construct a 99% confidence interval for the population proportion of voters who plan to vot… read more
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The poll shows Obama had only a statistically insignificant
The poll shows Obama had only a statistically insignificant lead of 47% to 44% over Clinton, down sharply from a 14 point edge he held over her in February when he was riding the tide of 10 straight v… read more
R.R. Jha
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Near the time of an election, a cable news service performs
Near the time of an election, a cable news service performs an opinion poll of 1,000 probable voters. It shows that the Republican contender has an advantage of 52% to 48% with a standard deviation of… read more
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1)A newspaper conducted a statewide survey concerning the
1)A newspaper conducted a statewide survey concerning the 1998 race for state senator. The newspaper took a random sample of 1200 registered voters and found that 620 would vote for the Republican can… read more
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A newspaper recently conducted a survey of a random sample
A newspaper recently conducted a survey of a random sample of 120 registered voters in order to predict the winner of a local election. The Republican candidate was preferred by 60 of the respondents.… read more
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Are you able to assist me on a hw problem? 25 independent
25 independent polls of 1000 random people each are taken during the course of an extremely close election campaign. People in the poll are asked which of the two candidates they favor and the percentage who favor the incumbent candidate are computed in each poll … read more
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Statistics Questions1. One thousand out of two thousand registered
Statistics Questions 1. One thousand out of two thousand registered voters sampled indicated they planned to vote for the Republican candidate for the state's U.S. senator. Using 0.95 degree of confid… read more
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You answered similar questions previously but the data has
You answered similar questions previously but the data has slighly changed. Can you please provide details as to how you worked the problem? Thx #1 Find the sample size needed to estimate the percenta… read more
Chirag
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A newspaper wants to estimate the proportion of Americans who
A newspaper wants to estimate the proportion of Americans who will vote for Candidate A. A random sample of 1000 voters is taken. Of the 1000 respondents, 526 say that they will vote for Candidate A. … read more
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Hi Sandhya! Its me again, do you think you could help me
Hi Sandhya! It's me again, do you think you could help me with this homework? Deadline is 7 hours from now. Really need help! QUESTION 1 Before launching a new online service, a bank is interested in … read more
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Question 1 Assume youve administered a worker satisfaction
Question 1 Assume you've administered a worker satisfaction test to a random sample of 25 workers at your company. The test is purported to have a population standard deviation or σ of 4.50. The test … read more
Chirag
Master's Degree
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A newspaper want to estimatethe proportion of Americans who
A newspaper want to estimatethe proportion of Americans who will vote for Candidate A. A random sample of 1000 voters is taken. of the 1000 respondents, 526 say that they will vote for candidate A. Wh… read more
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