A survey of folk music fans yield this 95% confidence interval estimate of the proportion of fans who love the music of David Wilcox :  0.74 to 0.86.   To the nearer percentage point the margin of error for the survey is

Q: A random sample of 300 college freshmen found that 112 of them own an iPhone.  Find a 95% confidence…

A: Given, Favorable Cases XX = 112112 Sample Size NN = 300300

Q: When finding the upper bound, U, of a confidence interval given the lower bound, L, and the margin…

A: The objective of this question is to find the upper bound of a confidence interval for the…

Q: If n=30, (x-bar)=38, and s=8, construct a confidence interval at a 90% confidence level. Assume the…

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Q: A poll of n = 500 randomly selected elementary school students resulted in 110 of them stating…

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Q: In a​ poll, 51​% of the people polled answered yes to the question​ "Are you in favor of the death…

A:

Q: There are many reasons adults use credit cards. A recent survey found that 66% of adults used credit…

A: 66% of adults use credit cards for convenience.Confidence level is 99% i.e., 0.99.Margin of error is…

Q: The width of a confidence interval for the population proportion will be: Select one: a. wider for…

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Q: Dylan wants to determine a 95% confidence interval for the true proportion of high school students…

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Q: 95% confidence interval for the true percent of workers in this city who have full health insurance…

A: The question is about confidence interval.Given :Randomly selected no. of workers ( n ) = 1700No. of…

Q: D. The same collge president is more interested in testing her suspicion that the proportion of…

A: Given, Population proportion p=0.37 Sample proportion p^=0.3736 n=364 Null and alternative…

Q: A poll of n = 500 randomly selected elementary school students resulted in 110 of them stating…

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Q: If n=28, ¯x=46x¯=46, and s=7, find the margin of error at a 95% confidence level Give your answer…

A: Given,n=28x¯=46s=7degrees of freedom (df)=n-1=28-1=27α=1-0.95=0.05α2=0.025t0.025(27)=2.052   (from…

Q: For a confidence level of 80% with a sample size of 24, find the t-score.

A: From the provided information, Confidence level = 80% Level of significance (α) = 1 – 0.80 = 0.20…

Q: The following are two computed confidence intervals for a population mean: (100.01, 110.05) (100.05,…

A: Level of Significance: In testing of hypothesis, Level of Significance is the probability of…

Q: An automotive manufacturer wants to know the proportion of new car buyers who prefer foreign cars…

A: Step 2 of 2 :Given, Sample size, n = 1046Number of successes , x = 335 Confidence level = 85% = 0.85…

Q: 6. to the nearest percentage point, the margin of error for this survey is?

A: Given: Lower limit = 0.74 Upper limit = 0.86 The point estimate can be calculated as: Point estimate…

Q: Which of the following will decrease the width of a confidence interval for the proportion? I.…

A: It is given that the width of a confidence interval for the proportion will decrease.

Q: A newspaper reporter asked an SRS of 100 residents in a large city for their opinion about the…

A: Given - Sample size = n = 100 Confidence Interval for proportion = (0.565 , 0.695)

Q: If n=22, ¯xx¯(x-bar)=45, and s=9, find the margin of error at a 95% confidence level Give your…

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Q: How much more likely are college men than college women to participate in intramural sports?  A…

A: Given information: Number of college men surveyed, n1=688 Number of college women surveyed, n2=579…

Q: Use the given data to construct a confidence interval for the population proportion p of the…

A: It is given that sample size (n) is 70  and x is 50.

Q: Use the following to answer the next two questions. A 2020 poll found that 520 out of 824 randomly…

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Q: If n=29, ¯xx¯(x-bar)=34, and s=3, find the margin of error at a 95% confidence level Give your…

A: Given problem Given that   n = 29 x-bar = 34  s = 3 The margin of error at a 95% confidence level…

Q: If n=24, ¯x(x-bar)=37, and s=6, find the margin of error at a 98% confidence level Give your answer…

A: Margin of error is the sampling error in the sample. It is also defined as the number of…

Q: You want to estimate the percentage of small incorporated businesses that are owned by women. A…

A: The random variable percentage of small incorporated businesses follows binomial distribution. The…

Q: If n=23, ¯x(x-bar)=34, and s=8, find the margin of error at a 99% confidence level Give your answer…

A: Solution: From the given information, n=23, x-bar=34 and s=8. The confidence level is 0.99.

Q: If n = 41, ã=30, and s = 6, construct a confidence interval at a 80% confidence level.

A: It is given that Sample size n = 41 Sample mean = 30 Sample SD s = 6 The critical value of t at df =…

Q: A laboratory tested n = 101 chicken eggs and found that the mean amount of cholesterol was = 82…

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Q: Suppose you calculate a 95% confidence interval for a proportion to to be: 0.39 to 0.78. Determine…

A: Given,   Lower bound = 0.39​ Upper bound = 0.78   Here, we use to determine the margin of error.

Q: Critical Value: Margin of Error: Lower Bound: Upper Bound: Interpret (context) OEM C *2 decimals *2…

A: * Hi! Thank you for the question As per the honour code, We’ll answer the first question since the…

Q: If n=10, ¯x(x-bar)=38, and s=5, find the margin of error at a 80% confidence level Give your answer…

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Q: You will need your z and t charts for this  Death penalty: A group claims that the overall feelings…

A: The question is about confidence interval.Given :No. of interviewed people ( n ) = 643No. of people…

Q: A marketing research company is estimating which of two soft drinks college students prefer. A…

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Q: If n=23, ¯xx¯(x-bar)=45, and s=6, find the margin of error at a 95% confidence level

A: Given : n=23 s=6

Q: If n=28, ¯xx¯(x-bar)=35, and s=8, find the margin of error at a 95% confidence level Give your…

A: Given values, s = 8 n = 28 Confidence level = 95% z score at 95% confidence level = 1.96

Q: Determine tc for n = 15 and a confidence level of 99%.

A: From the given information, Sample size (n) =15, Confidence level (1-α)= 0.99 Thus, the t-critical…

Q: Suppose you survey a random sample from a large population to understand the population proportion.…

A: Obtain the sample size of a no preliminary estimate for p. The formula of sample size is, Obtain…

Q: Assume that the following samples are independent. In a random sample of 400 women, 47% favored…

A: Obtain the 98% confidence interval for the difference between the population proportions.   The 98%…

Q: The proportion of junior executives leaving large manufacturing companies within three years is to…

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Q: A random sample of high school students

A: Here it is given that, A 99% confidence interval based on this sample is 1.7 hours to 3.1 hours

Q: An automotive manufacturer wants to know the proportion of new car buyers who pref foreign cars over…

A: A sample of 897 cars; n=897 304 preferred domestic cars; x=304 α=0.05

Q: (0.24, 0.56) is a confidence interval for the proportion of people who liked a new soda flavor.…

A: Made comparisons with confidence interval formula for proportion.

Q: A College Alcohol Study interviewed an SRS of 1000 college students about their drinking habits.…

A: We have given that,  Sample of the size (n) = 1000 and the sample proportion p-hat= 0.5 Then, We…

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.