Snow Removal Survey In a recent study of 75 people, 41 said they were dissatisfied with their community’s snow removal service. Find the 95% confidence interval of the true proportion of individuals who are dissatisfied with their community’s snow removal service. Based on the results, should the supervisor consider making

Q: According to a recent survey of 1,200 people, 61% feel that the president is doing an acceptable…

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Q: A student polls his school to see if students in the school district are for or against the new…

A: Given : Sample proportion = 480600 = 0.8 90% confidence interval can be calculated as, P±Zα2×P×1-Pnα…

Q: In a survey of 1007 parents of children ages 8-14, 75% say they are willing to get a second or part…

A: The survey of 1007 parents of children 75% say they are willing to get a second or part time job…

Q: A wildlife refuge takes a survey of its past donors to try to estimate the percentage of all past…

A: We have given that,  Favorable cases (X) = 42 and sample size (n) = 150 Then,  We will find the 99%…

Q: A toothpaste industry conducted a survey on consumer preference in Laguna. The survey showed that…

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Q: A recent study of 2300 children randomly selected found 21​% of them deficient in vitamin D. ​a)…

A: Find z-critical value:…

Q: In a survey of 4026 ​adults, 708 oppose allowing transgender students to use the bathrooms of the…

A: Given:  n=4026 x=708

Q: A local news outlet reported that 56% of 600 randomly sampled Kansas residents planned to set off…

A: We have given that,  Sample proportion (p̂) = 56% = 0.56 and sample size (n) = 600 Then,  We will…

Q: A store randomly samples 603 shoppers over the course of a year and finds that 142 of them made…

A: a: It is given that 142 out of 603 shoppers made their visits because of a coupon they’d received in…

Q: Newsweek performed a poll in which 567 American parents were asked the question, “Would you prefer…

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Q: In a recent poll, 260 people were asked if they liked dogs, and 9% said they did. Find the margin of…

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Q: A smart phone manufacturer wants to find out what proportion of its customers are dissatisfied with…

A: Given that - A smart phone manufacturer wants to find out what proportion of its customers are…

Q: a survey of 3447 adults, 1477 say they have started paying bills online in the last year.…

A:

Q: A bank randomly selected 200 checking-account customers and found that 110 of them also had savings…

A: Given that A bank randomly selected 200 checking-account customers and found that 110 of them also…

Q: 85 students at a college were asked whether they had completed their required English 101 course,…

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Q: A student polls his school to see if students in the school district are for or against the new…

A: Given: n=600 and x=480. Then,p^=xn=480600=0.8

Q: You plan to construct a 90% confidence interval for the proportion of all middle school students who…

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Q: Out of a sample of 500 high school students, 376 said they would prefer to have computers in every…

A: Given that x=number of people who prefer to have computers= 376 n=sample size= 500 So the point…

Q: HighTech, Inc. randomly tests its employees about company policies. Last year in the 490 random…

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Q: In a survey of 2313 adults, 714 say they believe in UFOs.   Construct a 90% confidence interval for…

A: Given, In a survey of 2313 adults, 714 say they believe in UFOs. n=2313 x=714 Sample proportion:…

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: In a recent poll, 130 people were asked if they liked dogs, and 24% said they did. Find the margin…

A: Given, Total number of people = 130 Probability that a person likes a dog = 0.24 z value at 99%…

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

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Q: A drug is used to help prevent blood clots in certain patients. In clinical trials, among 4840…

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Q: 324 out of a simple random sample of 400 students hated their online math course. Find a 99%…

A: Given: Number of students that hated the online math course (y) = 324 Number of students (n) = 400…

Q: airline has surveyed a simple random sample of air travelers to find out whether they would be…

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Q: In a survey of 1200 adults, 562 said that they plan to watch the next Olympics on television. Using…

A: Givenx=562n=1200p^=xn=5621200=0.4683confidence interval = 95%

Q: Commerce students were asked if they watch or listen to the state of the nation address (SONA), of…

A: Given: n= 220 ,x= 105 At 90.0 % confidence level , z score= 1.645 Need to find confidence interval…

Q: A poll of 5000 residents in Brazil, Canada, China, France, Malaysia, South Africa, and the United…

A: From the provided information, Sample size (n) = 5000 805 of the responses, was doctors, nurses, and…

Q: 23. A sample of 250 male registered voters showed that 57% of them are in favour of higher taxes on…

A: The question is based on a confidence int. for difference between two popl. prop. Given : Confidence…

Q: In a recent poll, 270 people were asked if they liked dogs, and 29% said they did. Find the Margin…

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Q: From a sample of 2412 Jawas, 1013 said they had recently sold a stolen droid to a moisture farmer.…

A: We want to find the 99%CI for population proportion (p) Given  X=1013, n=2412 ɑ=0.01

Q: An internet service provider sampled 540 customers and found that 55 of them experienced an…

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Q: Workers in several industries were surveyed to determine the proportion of workers who feel their…

A: Confidence interval: The (1-α) % confidence interval for proportion p is given by,

Q: In a recent poll, 480 people were asked if they liked dogs, and 48% said they did. Find the Margin…

A: Solution: From the given information, p-hat=0.48 and n=480. The confidence level is 0.90.

Q: What is the correct interpretation of this confidence interval

A: The 99% confidence interval for the proportion of all students at this school who have their names…

Q: Yun is curious what proportion of users will click an advertisement that appears on his website. He…

A: We can use this formula to find the 99% confidence interval, p±zp1-pn

Q: Assume a nationwide random survey of 800 adults asked about attitudes toward “alternative medicine”…

A: We have given that,  Sample size (n) = 800 and Favorable cases (X) =448 Then,  We will find the 99%…

Q: A sociologist is interested in surveying workers in computer-related jobs to estimate the proportion…

A: Obtain the estimate value of the proportion of such workers who have changed jobs within the past…

Q: The PIIE Bank in ORSP has 650 checking account customers. A recent sample of 50 of these customers…

A: Solution-: Let, X= Number of customers have Visa card with the bank among 50 customers Given: We…

Q: In a random sample of 200 people, 154 said that they watched educational television. Find the 90%…

A: It is given that in a random sample of 200 people, 154 said that they watched educational…

Q: A researcher is attempting to calculate a 95% confidence interval for the number of blue Statsian…

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

Q: Astudent polls his school to see if students in the school district are for or against the new…

A: We have given that  Sample size N=600 and favorable cases X=480 Sample proportion p^=X/N

Q: In a survey participated by 100 college students, it was found out that 60% of them have personal…

A: Given data,Number of college students n=100Proportion of students who have personal computers at…

Q: In a recent poll, 380 people were asked if they liked dogs, and 75% said they did. Find the margin…

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Q: Use the one-proportion plus-four z-interval procedure to find the required confidence interval.…

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Q: A random sample of college students were asked whether they study more than four hours per week in…

A: Here we need to find the Margin of error from the given confidence interval.

Q: The Pizza Shop wanted to determine what proportion of its customers ordered only cheese pizza. Out…

A: Given x=15 n=80

Q: In a survey of 356 people who attended a local professional soccer teams most recent home game, 135…

A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.