How large is the sample if the confidence level is 97%, Ɛ = 2.5% and ρ = .35?
Q: If n=19, x¯(x-bar)=50, and s=2, find the margin of error at a 80% confidence level Give your answer…
A: x¯ = 50n = 9s = 280% confidence level
Q: If n=23, ¯x(x-bar)=47, and s=2, find the margin of error at a 90% confidence level Give your answer…
A:
Q: If n=23, (x-bar)=30, and s=3, find the margin of error at a 90% confidence level Give your answer to…
A: Introduction: The 100 (1 – α) % confidence interval for the population mean, μ, when the population…
Q: In a survey, the planning value for the population proportion is .25. How large a sample should be…
A: Solution: It is given that the planning value for the population proportion is 0.25. The confidence…
Q: Construct the confidence interval for the population mean y. C=0.95, x= 16.7, o= 4.0, and n= 75. A…
A: Here, C=0.95, x=16.7, σ=4.0, and n=75.
Q: Della has over 500 songs on her mobile phone, and she wants to estimate what proportion of the songs…
A: The formula for the confidence interval is , CI=p^± Z*p^1-p^n Where, p^=the proportion in sample…
Q: se the given degree of confidence and sample data to construct a confidence interval for the…
A:
Q: If n=16, x(x-bar)=43, and s=9, find the margin of error at a 99% confidence level Give your answer…
A: The random variable X follows normal distribution. The sample size is 16. The sample mean is 43. The…
Q: Find a 95% confidence interval for a mean, µ, where n = 324, x̄ = 2.7, s = .91, and se = .06.
A: Given: n = 324, x̄ = 2.7, s = .91, se = .06.
Q: For the data given, as the confidence leel increased from 95% to 99% did the margin of error…
A: We have given that a random sample of eye colours collected from a group of 40 MVCC students.
Q: In order to construct the 95% confidence interval, you choose which formula? O x ±1.645 × OT ±1.96 x…
A:
Q: When alpha is set to 0.01 what is the confidence level ? answer choices : 0.01 0.02 0.98 0.99
A: From the provided information, Level of significance (α) = 0.01
Q: If n=28, ā(x-bar)=39, and s=3, find the margin of error at a 80% confidence level Give your answer…
A: Since population standard deviation is unknown, Use t-distribution to find t-critical value. Find…
Q: In a poll, 51% of the people polled answered yes to the question "Are you in favor of the death…
A: The following information has been provided: p^=0.51E=0.03 The level of significance is : α=1-0.94…
Q: Use the given degree of confidence and sample data to construct a confidence interval for the…
A: Given Information n =87 x =48
Q: ccording to the data, calculate a 90% confidence interval for the sample mean. What was the T Score…
A: Solution: n= 30 Sample size ∑xi=642 x=∑xin=64230=21.4 Sample mean s2=∑(xi-x)2n-1=56.52414 Sample…
Q: If n=20, (x-bar)=44, and s=9, find the margin of error at a 98% confidence level Give your answer to…
A:
Q: Use the given degree of confidence and sample data to construct a confidence interval for the…
A: According to the provided information: The proportion can be calculated as:
Q: If α = 0.05, then what is the confidence level?
A: Given: α = 0.05 we know that, Confidence level+ α = 1
Q: If n=18, (x-bar)=38, and s=2, find the margin of error at a 95% confidence level Give your answer to…
A: Sol: According to the guidelines if there are multiple questions asked one question should be…
Q: What are the upper and lower limits and the width of the CI if you change the confidence level to…
A: Given that M = 130 SD = 15 N = 49 We have to find the upper and lower limits for the confidence…
Q: In order to make the decision for one business, your team constructed a 90% confidence interval, the…
A: For 90% confidence interval, the width of that confidence interval is 500.We have to reduce the…
Q: If n=19, (x-bar)=39, and s=8, find the margin of error at a 80% confidence level Give your answer…
A: We have given that, Sample size (n) = 19 and sample mean (X-bar) = 39 and sample standard deviation…
Q: In a survey, the planning value for the population proportion is .25. How large a sample should be…
A: We have to find sample size..
Q: Use the given degree of confidence and sample data to construct a confidence interval for the…
A: It is given that n=195 and x=162. The sample proportion is 162/195 = 0.8308 The sample size is 195…
Q: find the indicated z value of z α/2 that corresponds to the confidence level of 89.43%
A: Solution: From the given information, the confidence level is 89.43%. The critical value can be…
Q: What Z score would be used to construct a 90% confidence level? Is it ... a. 1.65 b. 2.33 c.…
A: Confidence Level = 90 Significance Level = α = (100-90)% = 0.1 Critical value = z* = 1.65 […
Q: 1. Given: n=130, a = 25, level of confidence is 90%. What is the margin of error of the given data?
A: The sample size is given as 130, n=130 The standard deviation is given as 25, σ=25 The Confidence…
Q: If n=19, a(x-bar)=31, and s=9, find the margin of error at a 80% confidence level Give your answer…
A:
Q: Use the given degree of confidence and sample data to construct a confidence interval for the…
A: Given data,n = 85x = 49 Sample proportion(p) = xn =4985=0.576Ƶ-value at 98% confidence is Ƶc = 2.326
Q: If you want to make a confidence interval for the mean with the TI-84, which of the following…
A: For the given statement Select the correct choice ?
Q: You find a confidence interval on proportion to be: 45.1% < p < 50.9% What is p? What is the…
A: Given confidence interval is 45.1% < p < 50.9% p=? Margin of error (E)=?
Q: use the given degree of confidence and sample date to contruct a confidence interval for the…
A: Sample size = n = 124 Sample number of events = x = 20 Sample proportion = p̂ = x/n = (20/124) =…
Q: Construct a confidence interval for the population proportion p. n ? 144, x ? 86, 90% confidence
A: Given: Confidence level = 0.90 Sample size (n) = 144 x = 86 Sample proportion p^=xn=86144
Q: in a poll 51% of people polled answered yes to the question Are you in favor of the death penalty…
A: Given, p=0.51 M.E=0.02 α=1-0.94=0.06 As per z-distribution table, the critical value of z at 0.06…
Q: A magazine provided results from a poll of 500 adults who were asked to identify their favorite pie.…
A: Solution: Given information: n= 500 Sample size Here we need to interpret the meaning of each…
Q: Use the given data to construct a confidence interval of the requested level. x = 98, n = 223,…
A: Given information: x=98, n=223Confidence level=99% p^=xn=98223=0.4395 α2=1-0.992=0.005 Use the excel…
Q: If [1740, 1850] is a confidence interval for a population mean. Find the margin of error. Select…
A:
Q: In a survey, the planning value for the population proportion is p* = 0.25. How large a sample…
A: Given,sample proportion(p*)=0.25margin of error(E)=0.08α=1-0.95=0.05α2=0.025Z0.025=1.96 (from…
Q: If n=15, (x-bar)=46, and s=3, find the margin of error at a 90% confidence level Give your answer to…
A: According to the given information, we haveSample size, n = 15Sample mean = 46Sample standard…
Q: Using your answers to parts (a) and (b), find a 95% confidence interval estimating the proportion of…
A: Here we need to construct a 95% confidence interval.
Q: Use the given degree of confidence and sample data to construct a confidence interval for the…
A: Given data, n=195 x=126 p=x/n=126/195=0.646 z-value at 95% confidence is Zc=1.96
Q: Example : In the group of 345 children surveyed, the sample mean was 11.3 and the standard deviation…
A:
Q: If n=15, (x-bar)=37, and s=8, find the margin of error at a 80% confidence level Give your answer to…
A:
Q: The table below gives the number of people that bought either product A, B, or C and their gender.…
A: Hello there! Thank you for the question. According to our honor code can answer only three sub parts…
Q: If n=13, x(x-bar)=31, and s=4, find the margin of error at a 95% confidence level Give your…
A: n = 13 Mean = 31 Sample standard deviation = 4 95% confidence level
Q: If n=23, x(x-bar)=47, and s=3, find the margin of error at a 98% confidence level Give your answer…
A: Margin error is the difference between the estimated value and the original value. Here the critical…
Q: Find the value of −zα/2 that corresponds to a confidence level of 89.48%.
A:
Q: For what type of variable does it make sense to construct a confidence interval about a population…
A: In this case, we need to find the correct option for the given question.
Q: If n=17, (x-bar)=44, and s=8, find the margin of error at a 95% confidence level
A: The sample mean is 44 and standard deviation is 8.
How large is the sample if the confidence level is 97%, Ɛ = 2.5% and ρ = .35?
Step by step
Solved in 2 steps with 2 images