a telephone poll of 800 american adults asked where would you rather go in your spare...
a telephone poll of 800 american adults asked where would you rather go in your spare time? one response by 275 adults was the mall. compute and explain 98% confidence interval estimate of the proportion of all american adults who would respond the mall
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a telephone poll of 800 american adults asked where
would you rather go in your spare...
3. In a March 2010 poll of 1600 American adults, 1088 described themselves as "totally happy"...
3. In a March 2010 poll of 1600 American adults, 1088 described themselves as "totally happy" (this category included both “very happy" or "somewhat happy” responses) Use STATCRUNCH to construct a 95% confidence interval for the proportion of American adults who describe themselves as “totally happy." a. Best Point Estimate b. Margin of Error for a 95% confidence level. c. Construct the 95% confidence interval for the proportion of American adults who describe themselves as “totally happy”. Statement: (Round to...
An interactive poll found that 364 of 2,332 adults aged 18 or older have at least...
An interactive poll found that 364 of 2,332 adults aged 18 or older have at least one tattoo. (a) Obtain a point estimate for the proportion of adults who have at least one tattoo. (b) Construct a 90% confidence interval for the proportion of adults with at least one tattoo. (c) Construct a 98% confidence interval for the proportion of adults with at least one tattoo. (d) What is the effect of increasing the level of confidence on the width...
In a survey of 1066 adults, a poll asked, "Are you worried or not worried about...
In a survey of 1066 adults, a poll asked, "Are you worried or not worried about having enough money for retirement?" Of the 1066 surveyed, 630 stated that they were worried about having enough money for retirement. Construct a 95%confidence interval for the proportion of adults who are worried about having enough money for retirement. A 95% confidence interval for the proportion of adults who are worried about having enough money for retirement is? (? ,?).
In 2001, the Gallup poll found that 81% of American adults believed that there was a...
In 2001, the Gallup poll found that 81% of American adults believed that there was a conspiracy in the death of President Kennedy. In 2013, the Gallup poll asked 1,039 American adults if they believe there was a conspiracy in the assassination, and found that 634 believe there was a conspiracy ("Gallup news service," 2013). Do the data show that the proportion of Americans who believe in this conspiracy has decreased? Test at the 5% significance level. 1- What is...
A poll taken this year asked 1009 adults whether they were fans of a particular sport...
A poll taken this year asked 1009 adults whether they were fans of a particular sport and 55% said they were. Last year, 56% of a similar-size sample had reported being fans of the sport. a) Find the margin of error for the poll taken this year if one wants 90% confidence in the estimate of the percentage of adults who are fans of the sport. b) If one wanted to be 85% confident instead of 90% confident, would the...
25. A 2012 Gallup poll asked a random sample of 120 American adults whether they thought...
25. A 2012 Gallup poll asked a random sample of 120 American adults whether they thought the news media exaggerate the seriousness of global warming. The proportion who responded "No" was 59.2%. Is this good evidence that majority of American adults do not believe the news media exaggerate the seriousness of the global warning? a) Set up appropriate null and alternative hypothesis to answer the above question b) Calculate the value of the test statistic. c) Is the data significant...
A newspaper reported on the results of an opinion poll in which adults were asked what...
A newspaper reported on the results of an opinion poll in which adults were asked what one thing they are most likely to do when they are home sick with a cold or the flu. In the survey, 62% said that they are most likely to sleep and 17% said that they would watch television. Although the sample size was not reported, typically opinion polls include approximately 1,000 randomly selected respondents a. Assuming a sample size of 1,000 for this...
In May 2006, the Gallup Poll (www.galluppoll.com) asked 510 randomly sampled adults the question "Generally speaking, do...
In May 2006, the Gallup Poll (www.galluppoll.com) asked 510 randomly sampled adults the question "Generally speaking, do you believe the death penalty is applied fairly or unfairly in this country today?" Of these, 60% answered "Fairly," 35% said "Unfairly," and 4% said they didn't know. First, please answer this question: From this survey, what can we conclude about the opinions of all adults? (To answer this question, please build a 95% confidence interval for the proportion of all U.S. adults...
A newspaper reported on the results of an opinion poll in which adults were asked what...
A newspaper reported on the results of an opinion poll in which adults were asked what one thing they are most likely to do when they are home sick with a cold or the flu. In the survey, 65% said that they are most likely to sleep and 12% said that they would watch television. Although the sample size was not reported, typically opinion polls include approximately 1,000 randomly selected respondents. a. Assuming a sample size of 1,000 for this...
A newspaper reported on the results of an opinion poll in which adults were asked what...
A newspaper reported on the results of an opinion poll in which adults were asked what one thing they are most likely to do when they are home sick with a cold or the flu. In the survey, 60% said that they are most likely to sleep and 11% said that they would watch television. Although the sample size was not reported, typically opinion polls include approximately 1,000 randomly selected respondents. a. Assuming a sample size of 1,000 for this...
3. In a March 2010 poll of 1600 American adults, 1088 described themselves as "totally happy" (this category included both “very happy" or "somewhat happy” responses) Use STATCRUNCH to construct a 95% confidence interval for the proportion of American adults who describe themselves as “totally happy." a. Best Point Estimate b. Margin of Error for a 95% confidence level. c. Construct the 95% confidence interval for the proportion of American adults who describe themselves as “totally happy”. Statement: (Round to...
25. A 2012 Gallup poll asked a random sample of 120 American adults whether they thought the news media exaggerate the seriousness of global warming. The proportion who responded "No" was 59.2%. Is this good evidence that majority of American adults do not believe the news media exaggerate the seriousness of the global warning? a) Set up appropriate null and alternative hypothesis to answer the above question b) Calculate the value of the test statistic. c) Is the data significant...
A newspaper reported on the results of an opinion poll in which adults were asked what one thing they are most likely to do when they are home sick with a cold or the flu. In the survey, 62% said that they are most likely to sleep and 17% said that they would watch television. Although the sample size was not reported, typically opinion polls include approximately 1,000 randomly selected respondents a. Assuming a sample size of 1,000 for this...
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