From a survey of 400 new Wawasan Open University students chosen at random, it was discovered that 240 students have been to the library every day. Using this data, construct (a) 95% confidence interval  (b) 99% confidence interval  for the proportion of students who use the library every day

Q: 5. In a random sample of 400 college students, 16 had perfect attendance Find the 95% confidence…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: In a poll of 1000 randomly selected voters in a local election, 691 voters were against fire…

A: Solution: n= 1000 Sample size of voters  x = 691 voters were against fire department bond measures.…

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Q: In your work for a real estate company, you find that in a sample of 1762 home buyers, 722 found…

A: Given Data: x=722 n=1762   p^=7221762=0.4098

Q: Construct the requested confidence interval. In a Gallup Poll of 1005 individuals, 452 thought they…

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Q: In a poll of 1000 randomly selected voters in a local election, 264 voters were against fire…

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Q: A student would like to estimate the proportion of the senior class that plans to attend prom this…

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Q: In a random sample of 145 UNO students, we find that 53% have attended a Maverick hockey game at…

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Q: The business college computing center wants to determine the proportion of business students who…

A: Solution: Note: Hello! As you have posted 2 different questions, we are answering the first…

Q: 5.From a sample of 1,000 college students, 28% watch the Super Bowl game each year. Find the margin…

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Q: In a survey of 1,200 social media users, 56% said it is not okay to be friends with your boss.…

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Q: A university dean is interested in determining the proportion of students who receive some financial…

A: The point estimate=p^=118200=0.59n=sample size= 200z=critical value of 95% confidence…

Q: 11) In a Gallup poll, 1011 adults were asked if they consume alcoholic beverages and 64% of them…

A: (11) Obtain the 90% confidence interval estimate of the proportion of all adults who consume…

Q: Out of 1,500 licensed drivers, 900 admitted that they do not like to drive at night. What is the 92%…

A: Given Information:  Total Number of drivers = 1500  Number of drivers that do not like to drive at…

Q: The Graduate Schools take a random sample of recent MS graduates (n=135) and finds that 12 of these…

A: Givenn=135x=12confidence interval = 90%p^=xn=12135=0.0889α=1-0.90=0.10α2=0.05zc=zα2=z0.05=1.6449…

Q: In 2017, the CDC administered the Youth Risk Behavior Survey (YRBS) to a random sample of 14,795…

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Q: b. In the year 2000, a survey of 977 U.S. adults were asked who they felt was the greatest…

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Q: A university dean is interested in determining the proportion of students who receive some sort of…

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Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

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Q: In 2017, the CDC administered the Youth Risk Behavior Survey (YRBS) to a random sample of 14,795…

A: We have given that,  Favorable cases (X) = 2219 and sample size   (n) = 14795. Then,  We will find…

Q: Find a 95% confidence interval for the proportion of renters.

A: It is given that  Favourable cases, X = 360 Sample size, n = 600 Confidence interval = 95%

Q: The principal randomly selected six students to take an aptitude test. Their scores were:…

A: The sample mean and standard deviation are, The degree of freedom is, df=n-1   =6-1   =5

Q: consider  a random sample of 300 students in a university,75 of them declared that they like playing…

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Q: It was observed that 30 of the 100 randomly selected students smoked. Find the confidence interval…

A: It is given that, 30 out of 100 randomly selected students smoked i.e. proportion of the student who…

Q: In a Harris poll of 514 human resource professionals, 90% said that the appearance of a job…

A: Solution: Note: Hello! As you have posted more than 3 sub parts, we are answering the first 3…

Q: Based on the results of a survey conducted by a group of researchers, the proportion of female…

A: Confidence interval is a process of inference which uses the sample statistics to find the range of…

Q: In a sample of 85 statistics students, 41 said that finding confidence intervals for population…

A: It is given that x is 41 and sample size (n) is 85. The confidence level is 0.99.

Q: Alma is estimating the proportion of students in her school district who, in the past month, read at…

A: From the given information, n=50 and x = 32.

Q: In a random sample of 145 students, we find that 53% have attended a baseball game at some point in…

A: Given,sample size (n)=145sample proportion(p^)=0.53α=1-0.95=0.05α2 =0.025z0.025 =1.96

Q: Of 254 randomly selected medical students, 25 said that they planned to work in a rural community.…

A: It is given that, the number of students said that they planned to work in natural community   (x)…

Q: When 328 college students are randomly selected and surveyed, it is found that 122 own a car. Find…

A: We want to find 95% CI for population proportion (p)

Q: A university dean is interested in determining the proportion of students who receive some sort of…

A: Given that, X = 118 N = 200 99% confidence level

Q: In a poll of 1000 randomly selected voters in a local election, 59 voters were against school bond…

A: The confidence interval is used to find the range of interval in which the true parameter lies in.…

Q: An airline transports over 10 000 passengers daily, and the airline is curious what proportion of…

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Q: In a college 500 students were randomly selected for a survey to determine if they own a laptop. Of…

A: X: No. of students who own a laptop. Given:

Q: In a random sample of 990 college students 246 identified the religious preference as catholic what…

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Q: n a recent Zogby International Poll, nine of 48 respondents rated the likelihood of a terrorist…

A: Given that : x = 9 n = 48

Q: In a random sample of 250 students who enrolled in Science, 150 took notes during classes. Find an…

A: Given that n=250,x =150,alpha =0.05 Find an approximate 95% confidence interval for the population…

Q: In a recent poll of 200 randomly selected adults in the U.S., 130 were registered to vote. a) What…

A: Hello, thanks for your question. Since you have posted a question with multiple sub-parts, we will…

Q: Suppose that a safety group surveyed 1,200 drivers. Among those​ surveyed,78​% said that careless or…

A: Obtain the 99% confidence interval estimate for the true proportion in the population of all drivers…

Q: In a survey of 32 students at a local high school, 17 support changing the schools mascot. Find the…

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Q: Of 50 customers depositing a check, 17 received some cash back. Construct a 90 percent confidence…

A: We hav eto find 90% confidence interval....

Q: Use the given degree of confidence and sample data to construct a confidence interval for the…

A: Given : Sample Size, n = 316 Number of successes, x = 112 confidence level,c=0.99…

Q: consider a random sample of 300 students in a university, 75 of them declared that they like playing…

A: A random sample of 300 students in a university in which 75 of them declared that they like playing…

Q: Of 380 randomly selected medical students, 21 said that they planned to work in a rural community.…

A: (a) From the Standard Normal Table, the z value for 99% level is 2.576. The sample proportion is,…

Q: Construct a 99% confidence interval for the true proportion of all car license applications that…

A: Given Information:x=25n=155c=99%=0.99

Q: The z value for a 96.6% confidence interval estimate is?

A: z value for a 96.6% confidence interval estimate is?

Q: A survey found that out of 800 workers, 150 said they were interrupted by frank phone calls. Find…

A: Given,n=800x=150p^=xnp^=150800=0.18751-p^=1-0.1875=0.8125α=1-0.95=0.05α2=0.025Z0.025=1.96

Q: A random sample of 25 statistics students was asked: “Have you smoked a cigarette in the past week?"…

A: Given that  Random sample size(n) = 25 Students reported smoking within the past week (X) =6…