In a random sample of 1193 American adults aged 25 or older, it was found that 38.9% of them had a college degree. Construct a 98% confidence interval for the true proportion of all Americans aged 25 or older who have a college degree. Give your answers as decimals, rounded to 3 places after the decimal point (if necessary). 98% confidence interval for p:
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- Find the margin of error for the 99% confidence interval used to estimate the population proportion. In a clinical test with 1100 subjects, 25% showed improvement from the treatment.A survey asked, "How many tattoos do you currently have on your body?" Of the 1241 males surveyed, 182 responded that they had at least one tattoo. Of the 1047 females surveyed, 139 responded that they had at least one tattoo. Construct a 99% confidence interval to judge whether the proportion of males that have at least one tattoo differs significantly from the proportion of females that have at least one tattoo. Interpret the interval. P1 Let p, represent the proportion of males with tattoos and p, represent the proportion of females with tattoos. Find the 99% confidence interval for p, - p2. The lower bound is The upper bound is (Round to three decimal places as needed.)National statistics show that 23% of men (sample 1) smoke and 18.5% of women (sample 2) do. A random sample of 149 men indicated that 64 were smokers , and of 119 women surveyed , 41 indicated that they smoked. Construct a 95% confidence interval for the true difference in proportions of male and female smokers. Select one: O a. -0.032In a survey, 1000 Grade 7 students were asked if they read storybooks. There were 318 who said Yes. Use 95% confidence interval to determine the population proportion p of all Grade 7 students who read storybooks.a. 29%-35%b. 28%-36%c. 30%-34%b. In the year 2000, a survey of 1171 U.S. adults were asked who they felt was the greatest President. Of those surveyed, 397 reported that Abraham Lincoln was the greatest President. Use this data to construct a 99% confidence interval for the population proportion of all U.S. adults who would say that Abraham Lincoln was the greatest president before the year 2000. Answer using decimals and round to four decimal placesAccording to a recent random survey of 3,728 US adults, 1,939 report using their cell phones to play online games. Construct and interpret a 95% confidence interval for the proportion of US adults who use their cell phones to play online games. State: confidence interval for the true proportion of US adults who use their cell phones to play online games. Plan: ; Random: Random survey; 10%: 3,728 is less than 10% of all US adults; Large Counts: 1,939 successes and 1,789 failures ≥ 10. Do: Conclude: We are 95% confident that the interval from includes the true proportion of all US adults to play online games.A Gallup poll of 1487 adults showed that 43% of the respondents have Facebook pages. Construct a 95% confidence interval for the proportion of adults who have a Facebook page.Find the confidence level and a for an 85% confidence interval. What is the confidence level? (Type an integer or a decimal.)Construct a 95% confidence interval for p1 - p2 for a survey that finds 30% of 240 males and 41% of 200 females are opposed to the death penalty. Group of answer choices a.(-0.200, -0.021) b.(-1.532, 1.342) c.(-1.324, 1.512) d.(-0.561, 0.651)A survey asked, "How many tattoos do you currently have on your body?" Of the 1205 males surveyed, 199 responded that they had at least one tattoo. Of the 1030 females surveyed, 127 responded that they had at least one tattoo. Construct a 99% confidence interval to judge whether the proportion of males that have at least one tattoo differs significantly from the proportion of females that have at least one tattoo. Interpret the interval. Let p1 represent the proportion of males with tattoos and p2 represent the proportion of females with tattoos. Find the 99% confidence interval for p1−p2. The lower bound is nothing. The upper bound is nothing. (Round to three decimal places as needed.)The New York Times conducted a nationwide poll of 1048 randomly selected 13- to 17-year-olds. to estimate the proportion of 13- to 17-year-olds who have a television in their room. We can consider the sample to be a simple random sample. Of these 1048 teenagers, 692 had a television in their room. Give a 95% confidence interval for the proportion of all people in this age group who had a TV in their room at the time of the poll, and interpret what your interval means in context. State: Plan: Do: Conclude: