A survey finds that 45% American spend less than 2 hours a day watching television, with a margin of error at 5 percentage points construct a confidence interval from these results
Q: A study of 420,054 cell phone users found that 132 of them developed cancer of the brain or nervous…
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Q: In a study of speed dating, male subjects were asked to rate the attractiveness of their female…
A: Given The data is as follows: 5, 7, 2, 8, 5, 5, 6, 9, 7, 9, 4, 9 CL=0.99
Q: A certain study sampled 1283 adults about drinking coffee. The study showed that 824 of the adults…
A: Givensample size(n)=1283x=824confidence level=95%
Q: A study of 420,059 cell phone users found that 135 of them developed cancer of the brain or nervous…
A: Do cell phone users appear to have a rate of cancer of the brain or nervous system that is different…
Q: A scientist wondered if there was a difference in the average daily intake of dairy products between…
A: Reviewing information, X : Daily intake of dairy products of MenY : Daily intake of dairy products…
Q: Suppose a TA wanted to estimate the proportion of students who failed Stat 119 for the 980 students…
A: Obtain the point estimate for the true proportion of students who failed the course. The point…
Q: A 90% confidence interval for the mean proportion of airline reservations being canceled on the day…
A: Solution: From the given information, a 90% confidence interval for the mean proportion of airline…
Q: A technician randomly sampled repair logs for computers at a university. He wanted to find out how…
A: It is given that the proportion of computers that were repaired more than three times in the last…
Q: A recent study of 2700 children randomly selected found 21% of them deficient in vitamin D. …
A: Given that, 2700 children randomly selected found 21% of them deficient in vitamin D. n=2700p^=0.21…
Q: A poll of 827 students at Alpha state college found that 61% of those polled preferred a quarter…
A: It is given that the proportion of the students who preferred a quarter system to a trimester…
Q: A recent survey showed that from a sample of 500 packages delivered by a Postal Service, 480 were…
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Q: Some subjects were asked whether they would be willing to pay much higher prices in order to protect…
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Q: A sample of 15 found that 43.2% of those sampled consumed more than 2 alcoholic beverages a week.…
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Q: Determine from a confidence interval whether a test is significant?
A: Null hypothesis states that there is no difference between populations or a set of given…
Q: A sample of 12 females and 19 males found that 78.3% of females and 35.1% males supported increased…
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Q: Suppose we take a SRS of high school seniors and get a 95% confidence interval that 250 to 278…
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Q: Joe’s Pizza Joint found that 64.2% of the 328 pizzas sold last week included pepperoni. Find a98%…
A: Obtain the 95% confidence interval for the proportion of Joe’s customers that order pepperoni. The…
Q: A random sample of 520 adults was surveyed and it was found that 130 of them exercise at least once…
A: Given information- Sample size, n = 520 We have given that out of 520 adults was surveyed and it was…
Q: A recent poll indicated that 42% of men supported raises taxes to fund additional park services.…
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Q: The drug OxyContin is used to treat pain, but it is dangerous because it is addictive and can be…
A: Given,n=278x=76p^=xnp^=76278=0.2731-p^=1-0.273=0.727α=1-0.90=0.1α2=0.05Z0.05=1.645 (from Z-table)
Q: In a study of speed dating, male subjects were asked to rate the attractiveness of their female…
A: This question requires accurate results, Hence I will rise Excel to solve this question.…
Q: In a study of speed dating, male subjects were asked to rate the attractiveness of their female…
A: We have given data is as follow: 6 9 3 8 4 6 7 7 9 9 5 9 The confidence interval CL=0.95
Q: According to a report on consumer fraud and identity theft, California had 1439 complaints of…
A: Let x denote the number of complaints of identity theft in California. x=1439 The total number of…
Q: A sample of 200 females and 500 males found that 78.3% of females and 35.1% males supported…
A: given data female : p^1 = 0.783 n1 = 200male : p^2 = 0.351 n2 = 50095% ci for p1-p2.
Q: In a survey of 2,480 It's Always Sunny in Philadelphia fans, 17% said they have played Night…
A: We have to find out confidence interval for given data...
Q: In a study of speed dating, male subjects were asked to rate the attractiveness of their female…
A: The question is about confidence intervalGiven :To find :1 ) 90 % CI for the popl. mean2 ) What does…
Q: An Internet service provider sampled 540 customers and found that 90 of them experienced an…
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Q: A genetic experiment with peas resulted in one sample of offspring that consisted of 425 green peas…
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Q: A sample of 421 adults showed that 239 of them are connected to the Internet from home. Construct…
A: From the provided information, Sample size (n) = 421 From which 239 are connected to the Internet…
Q: A recent poll indicated that 42% of men supported raises taxes to fund additional park services.…
A: given data men: p^1 = 0.42 n1 = 21women : p^2 = 0.64 n2 = 1999% ci for p1-p2.
Q: In a study of speed dating, male subjects were asked to rate the attractiveness of their female…
A: Obtain the 99% confidence interval for the population mean. The 99% confidence interval for the…
Q: In a sample of 600 Ottawa families, it is found that 360 rent their dwellings while 240 own their…
A: It is given that sample size (n) is 360 and x is 240.
Q: A recent poll indicated that 42% of men supported raises taxes to fund additional park services.…
A: Given The data is as follows: Sample proportion of men, p^1=0.42 Sample proportion of women,…
Q: A recent poll indicated that 42% of men supported raises taxes to fund additional park services.…
A: The question is about confidence interval Given : Sample prop. of men supported raises taxes to fund…
Q: In a study of speed dating, male subjects were asked to rate the attractiveness of their female…
A: Find the distribution that has to be used to construct the confidence interval in the given…
Q: 90% confidence interval for the mean of airline reservations being canceled on the day of the flight…
A: Given 90% confidence interval is (2.68,9.42) Lower limit=2.68 Upper limit=9.42 Point estimate p=?
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- 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.A random sample of 120 rhesus monkeys found that the number of rhesus monkeys that live in a captive breeding facility is 77. Construct a 90% confidence interval for the true proportion of rhesus monkeys that live in a captive breeding facility.A poll reported that only 1316 out of a total of 1746 adults in a particular region said they had a "great deal of confidence" or "quite a lot of confidence" in the military. Assume the conditions for using the CLT are met. Complete part (a) (a) Find a 95% confidence interval for the proportion that express a great deal of confidence or quite a lot of confidence in the military, and interpret this interval. The 95% confidence interval for the proportion that express a great deal of confidence or quite a lot of confidence in the military is: ( ? , ? )
- A recent survey showed that 42% of US employers were likely to require higher employee contributions for health care coverage. Suppose the survey was based on a sample of 500 companies. Find the 99% confidence interval for the proportion of all companies likely to require higher employee contributions for health care coverage. (Round to four decimal places)In a preelection poll, a pollster finds that 442 out of 650 people polled favor Smith. Construct the 95% confidence interval for the proportion (nearest to 0.0001) of people in the whole population who favor Smith.Luggage claim returned within 24hrs , 90% recovered . Group who surveyed found only 104/123 people lost luggage was returned within 24hrs
- In a study of speed dating, male subjects were asked to rate the attractiveness of their female dates, and a sample of the results is listed below (1 = not attractive; 10 = extremely attractive). Construct a confidence interval using a 90% confidence level. What do the results tell about the mean attractiveness ratings of the population of all adult females?7,7,1,8,6,5,8,8,8,8,5,9 What is the confidence interval for the population mean u? __<u<__ (Round to one decimal place as needed.)A study is conducted by a physical therapist to determine whether there is a difference in the proportion of men and women in the U.S. that participate in regular sustained physical activity. It is found that 22% of menout of 550 and 19.5% of women out of 450 participated in regular sustained physical activity. Construct a 90% confidence interval for the difference in proportions of men and women that participate in regular sustained and state your conclusion.A sample of 1200 females and 1000 males found that 78.3% of females and 35.1% males supported increased funding of arts. Construct a 90% confidence interval around the difference in proportions.
- A recent poll indicated that 42% of men supported raises taxes to fund additional park services. The poll also found that 64% of women supported such a tax. The sample consisted of 29 men and 25 women. Construct a 90% confidence interval around the difference in proportions.A random sample of high school seniors were asked whether they were applying for college. The resulting confidence interval for the proportion of students applying for college is (0.65,0.69). What is the margin of error?Researchers are studying whether the proportion of homeschooled children in district 1 (considered 1) is less than the proportion of homeschooled children in neighboring district 2 (considered as 2). To test the theory info was gathered: district 1 had 600 students of which 90 were homeschooled. District 2 had 550 students of which 99 were homeschooled. What is the 95% confidence interval for the difference proportion between district 1 and 2? A. (-0.086, 0.026) B. (0.143, 0.217) C. (0.113, 0.187)
