A work sampling study requires 95% confidence level with 5% limit error. How many observations are required if the machine down time is 8%
Q: If n = 100 and p (p-hat) = 0.9, construct a 95% confidence %3D interval. Give your answers to three…
A: Givensample size(n)=100p^=0.9α=1-0.95=0.05α2=0.025zc=zα2=z0.025=1.96 (from z table)
Q: If a 92% Confidence Interval for the Population Mean is (67.8, 78.9), find its Margin of Error.
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Q: 37% from a sample of 3800 people are saving for retirement. Construct the confidence interval for…
A: Given that. Sample size n =3800 Sample proportion p^=37%=0.37
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A: HERE , MOE = 0.01 confidence level = 95% here z-critical for 95% confidence level = 1.96 here use…
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A: Since we know population standard deviation, use z-distribution to find z-critical value.…
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Q: If n = 560 and X = 448, construct a 95% confidence interval for the population proportion, p. %3D…
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Q: Use the sample data and confidence level given below to complete parts (a) through (d). A research…
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Q: a 95% confidence interval estimate for population mean is determined to be 75.38 to 86.52. if the…
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Q: If n=41n=41, ¯xx¯=36, and s=9s=9, find the margin of error for a 80% confidence level.
A: Answer - Given, Sample size n = 41, x = 36 and s = 9 80% confidence interval…
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A: The given data of TPH is shown below 19 119 40 129 48 114 23 92 79 43 19 62 118 230…
Q: Suppose you want to construct a confidence interval with a margin of error of 0.03 (3%). Find the…
A: The formula for calculating sample size is, n = z2*p^(1-p^)MOE2 Where, z is the z score (default…
Q: A researcher is interested in a 95% confidence interval. It is found to have a point estimate of 2.5…
A: From the provided information, Confidence level = 95% Point estimate = 2.5 Margin of error (E) = 0.6
Q: If n=27, (x-bar)=34, and s=3, find the margin of error at a 90% confidence leve Give your answer to…
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Q: What is the confidence interval estimate for the population mean? If the sample mean is 13 and error…
A: Given information: The sample mean is, M = 13 The error bound for the mean is, E = 3.2 It is…
Q: If n=540 and (p-hat) = 0.13, construct a 99% confidence interval. Give your answers to three…
A: We have given that, Sample size (n) = 540 Sample proportion (p-hat) = 0.13 Then, We will find the…
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Q: You measure 32 textbooks weight and find they have a mean weight of 67 ounces. Assume the standard…
A: Given: Sample size (n) = 32 Mean (x̄) = 67 ounces Population standard deviation (σ) = 8.302…
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Q: You measure 29 backpacks' weights, and find they have a mean weight of 46 ounces. Assume the…
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Q: You measure 44 dogs' weights, and find they have a mean weight of 80 ounces. Assume the population…
A: You measure 44 dogs' weights, and find they have a mean weight of 80 ounces. Assume the population…
Q: If n = 180 and X = 144, construct a 99% confidence interval for the population proportion, p. Give…
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Q: If X= 102, o=9, and n=63, construct a 95% confidence interval estimate of the population mean, μ.
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Q: If X=72, σ=13, and n=66, construct a 95% confidence interval estimate of the population…
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Q: If n=19, x= 47, and s = 8, find the margin of error at a 99% confidence level Give your answer to…
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Q: If n = 530 and X = 424, construct a 99% confidence interval for the population proportion, p. Give…
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Q: Assume that a sample is used to estimate a population proportion p. To find the 95% confidence…
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Q: The FBI wants to determine the effectiveness of their 10 Most Wanted list. To do so, they need to…
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Q: If N=480 and p̂ (p-hat) =0.88, find the margin of error at a 95% confidence level.
A: From the provided information, Sample size (n) = 480 p̂ (p-hat) =0.88 Confidence level = 95%
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Q: A survey of 1000 people was conducted. 44% said they found it hard to adopt a child in the US.…
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Q: construct a confidence interval for this data. You should construct a 95% confidence interval for…
A: Note: Hi there! Thank you for posting the question. As you have posted multiple questions, as per…
Q: You measure 27dogs' weights, and find they have a mean weight of 63 ounces. Assume the population…
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Q: The estimated prevalence is 19% and the desired confidence is 93% with a margin of error of 4%.…
A: Given,margin of error(E)=0.04sample proportion(p^)=0.19α=1-0.93=0.07α2=0.035Z0.035=1.8119…
Q: Exam 2 Math 200 Fall 2019-03 7. A random sample of 31 people in a nursing home had a mean systolic…
A: We have to create 90% confidence interval.
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A: Given data: Sample size, n = 64 Sample mean, x¯=69 Sample standard deviation, s=7 The degree of…
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- MODULE 2 2. A sample of 20 bags of the same brand of candies was selected and found a mean weight of 120 grams. Assume that the population distribution of bag weights is normal. The weight of each bag was then recorded. The population standard deviation is known to be 2.1 grams. Construct a 90% confidence interval for the population mean weight of the candies. 3. A survey of 200 Internet users shows that they spend an average of 2 hours and 22 minutes per day on social networking. If the margin of error is 2.2 hours at 95% confidence, construct the confidence interval. 4. Suppose that a government law office does a study to determine the time needed to complete one personal profile sheet for consultation. It randomly surveys 100 people. The sample mean is 23.6 minutes. There is a known standard deviation of 7.0 minutes. The population distribution is assumed to be normal. Construct a 95% confidence interval for the population mean to complete the form. 5. A camp counselor is interested…You measure 38 textbooks' weights, and find they have a mean weight of 58 ounces. Assume the population standard deviation is 3.9 ounces. Based on this, construct a 90% confidence interval for the true population mean textbook weight .You measure 33 textbooks' weights, and find they have a mean weight of 62 ounces. Assume the population standard deviation is 4.6 ounces. Based on this, construct a 95% confidence interval for the true population mean textbook weight
- If X=101, o=27, and n= 32, construct a 95% confidence interval estimate of the population mean, pIf n = 550 and X = 440, construct a 90% confidence interval for the population proportion, p. Give your answers to three decimals < p <If n=200 and X=70, construct a 99% confidence interval estimate for the population proportion. SAS (Round to four decimal places as needed.)
- The estimated prevalence is 25% and the desired confidence is 95% with a margin of error of 4%. What is n=If x=76 ₁² = 14 and n=65, Construct a 95% Confidence interval estimate of the population mean, pe الكيكIf N = 25, ?̅= 135, s = 24 and assuming that the population is normally distributed,construct a 95% confidence interval estimate for the population mean.