Score: 30.8/100 7/16 answered Question 6 > In a recent poll, 590 people were asked if they liked dogs, and 70% said they did. Find the Margin of Error for this poll, at the 90% confidence level. Give your answer to four decimal places if possible. Submit Question

Q: Wi-Fi Access A survey of 59 students in grades 4 through 12 found 64% have classroom Wi-Fi access.…

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

Q: ample of 1100 observations taken from a population produced a sample proportion of 0.30. Make a 90%…

A: Confidence interval: It is defined as the range which contains the value of true population…

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A: It is given that sample mean is 1,105 and the population standard deviation is 240.

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Q: A poll of 2531 U.S. adults found that 1341 regularly used Facebook as a news source. a. Find p̂…

A: Solution

Q: A clinical trial tests a method designed to increase the probability of conceiving a girl. In the…

A: 99% of confidence interval for p p^ = xn = 268335= 45 = 0.8 Significance level α = 1-confidence…

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A: Obtain the 96% confidence interval for the true population proportion. The 96% confidence interval…

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A:

Q: A researcher studying a large population of women measures the body mass index in a sample of size…

A: Given,Mean x¯ = 31.8Standard deviaiton σ = 7.1Sample size n = 51

Q: Gasoline Use A random sample of 36 drivers used on average 749 gallons of gasoline per year. If the…

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Q: A recent Gallup Poll asked 1523 adults if they bought a lottery ticket in the past year. Eight…

A: Solution: e. Let X be the number of adults who bought a lottery ticket in the past year and n be the…

Q: In a survey of 2310 adults, 706 say they believe in UFOS. Construct a 99% confidence interval for…

A: It is given that sample size (n) is 2,310 and x is 706.

Q: Q1:ln a sample of 100 steel wires the average breaking strength is 50 kN, with a standard deviation…

A: Note: Hi there! Thank you for posting the question. As there are multiple sub parts, according to…

Q: Use the confidence interval to find the estimated margin of error. Then find the sample mean. A…

A: Given confidence interval is (3.1, 3.7) We have to find the Margin of error and mean. We know that…

Q: The population mean of a set of data is unknown. The sample mean is 44, and the error bound for the…

A:

Q: You are analyzing a confidence interval using a 90% confidence level in your analysis. You collect a…

A: For 90% CI , Z value calcukated from the normal table. As 1.645

Q: Use the confidence interval to find the estimated margin of error. Then find the sample mean.   A…

A:

Q: 99% confidence interval for the proportion of the high school students who have been cyberbullied,…

A: Given that Sample size n = 14795 Number of high school students who have cyberbullied, X = 2219 The…

Q: You are analyzing a confidence interval using a 99% confidence level in your analysis. You collect a…

A: Introduction: It is required to construct the 99% confidence interval of the unknown population…

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

A: From the provided information, Sample size (n) = 70 and x = 21 Sample proportion (p̂) = x/n = 21/70…

Q: at the university spend on groceries each month. From a sample of 29 random students, you find that…

A: Given that  Sample size n =29 Sample mean =871.35 Standard deviation =235.06 NOTE:- According to…

Q: A random sample of 25 students were tested. Assume that the scores were normally distributed at 95%…

A: From the provided information, Sample size (n) = 25 Confidence level = 95%

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A: It is given that the mean is 0.993 and the population standard deviation is 0.01.

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Q: A drug is used to help prevent blood clots in certain patients. In clinical​ trials, among 4758…

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Q: Wi-Fi Access A survey of 57 students in grades 4 through 12 found 69% have classroom Wi-Fi access.…

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Q: A random sample of 136 attorneys have mean IQ score of 109.2 and standard deviation IQ score 15. The…

A: From the given information, Sample size (n) = 136 Sample mean (M) = 109.2 Sample standard deviation…

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Q: na survey of 2,300 website users, 1,861 cited "seeing photos or videos" as a major reason why they…

A: Given sample size(n)=2300 confidence interval=95%

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A: As given,  The estimate to be within +/- 2% . This implies, the margin of error (E) = 2% or 0.02…

Q: A clinical trial tests a method designed to increase the probability of conceiving a girl. In the…

A:

Q: A recent Gallup Poll asked 1523 adults if they bought a lottery ticket in the past year. Eight…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Rosetta wants to estimate the percentage of people who rent their home. She surveys 250 individuals…

A:

Q: You are analyzing a confidence interval using a 90% confidence level in your analysis. You collect a…

A: The random variable X follows normal distribution. We have to find the confidence interval for the…

Q: Wi-Fi Access A survey of 60 students in grades 4 through 12 found 63% have classroom Wi-Fi access.…

A:

Q: #1 CI sample size A political candidate has asked you to conduct a poll to determine what…

A:

Q: Q1. A survey of 345 men showed that the mean time spent on daily grocery shopping is 15 mins. From…

A: Given: Sample size, n=345 Sample mean, x¯=15Population sd,σ=3Confidence level=98%

Q: merican adults drink alcohol of one kind or anot an adults? ts to estimate the percentage of…

A: Given : Margin of error, ME = 0.01 sample proportion, p̂ = 0.61…

Q: Xtra Cr) How many people must be surveyed to get a 99% confidence interval for p which has a maximum…

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A: Given, Confidence Interval is (0.68, 0.82) Upper limit U  = 0.82 Lower limit L = 0.68

Q: A confidence interval for a population mean has a margin of error of 0.047. a. Determine the length…

A: a. Length of the confidence interval: The value of margin of error in the confidence interval is…

Q: A chemical manufacturer claims that its​ ice-melting product will melt snow and ice at temperatures…

A: Consider that p is the population proportion and n is the sample size.

Q: a) Let p be the proportion of persons who like pineapple on their pizza. A random sample of n = 1530…

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A: We have to find sample size..

Q: ccording to a 2018 poll, 20% of adults from a certain region were very likely to watch some coverage…

A: Solution: Given information: n= 1200 Sample size  p^= 0.20 Sample proportion  E= 0.04 Margin of…

Q: A confidence interval for a population mean has a margin of error of 10.7. (a)Obtain the length of…

A: a) A confidence interval of population mean, µ, in terms of sample mean and margin of error, can be…

Q: You measure 39 backpacks' weights, and find they have a mean weight of 42 ounces. Assume the…

A: x¯=42 ouncesσ=5.7 ouncesn = 39 confidence interval = 99%

Q: n a survey of 2111 adults in a recent​ year, 1244 say they have made a New​ Year's…

A: For 90 % CI , α =0.1 Zα2= 1.645 (+NORMSINV(0.05) --Excel function)) ___________________ For 95% CI ,…

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.