.Find 95% confidence interval for the population mean, if the sample size is 64, the sample mean is 508 and standard deviation is 28.
Q: For a population data set, σ=13.3. How large a sample should be selected so that the margin of error…
A: Obtain the sample size. The sample size is obtained below as follows: The formula of sample size is,…
Q: If X = 117, o=24, and n = 30, construct a 99% confidence interval estimate of the population mean, µ
A: It is given that Sample size n = 30 Sample mean = 117 Population SD = 24
Q: If n- 22, - 44, and s 12, construct a confidence interval at a 95% confidence level. Assume the data…
A: Solution We solve it by using excel
Q: If a confidence interval for a binomial proportion is (11.854, 13.385), which of the following would…
A: Given : a confidence interval for a binomial proportion is (11.854, 13.385).
Q: If n=400 and X=100, construct a 95% confidence interval estimate for the population proportion.
A: Given,x=100n=400sample…
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A: It is given that margin of error (E) is 0.03 and the confidence level is 0.95.
Q: If X = 114, α= 20, and n = 33, construct a 99% confidence interval estimate for the population mean,…
A: Given data: Sample Mean = 114 Population standard deviation = 20 Sample size = 33 Confidence level…
Q: If n = 220,p = 0.4,then what will be the 87.4% confidence interval for the population proportion?
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Q: #7. On the verbal section of the SAT, the standard deviation is known to be 100. What size sample…
A: Introduction: The 100 (1 – α) % confidence interval for the population mean, μ, when the population…
Q: 50. Suppose a 90% confidence interval is stated as (0.3011, 0.4189). What is the sample proportion…
A: Given information- We have given a value of 90% confidence interval is- C.I = (0.3011, 0.4189) Lower…
Q: If n = 330 and X = 264, construct a 95% confidence interval for the population proportion, p.
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Q: If Xbar=81,S=20,and n=36,and assuming that the population is normally distributed, construct a…
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Q: For the provided sample mean, sample size, and population standard deviation, complete parts (a)…
A: Given data,n=100x=22σ=3z-value at 95% confidence is Zc=1.96
Q: Construct a 95% confidence interval to estimate the population mean when x=133 and s = 35 for…
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Q: If n=12, =49, and s=8, construct a confidence interval at a 80% confidence level. Assume the data…
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Q: Construct the indicated confidence interval for the population mean . Assume c = 0.98, = 101.3, =…
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Q: Suppose you have 62 samples with sample standard deviation 4.4. A 99% confidence interval for the…
A: The confidence interval is an interval of estimating the unknown value of the population parameter,…
Q: Use the given confidence interval to find the margin of error and the sample mean. (15.3,22.3)
A: We have to find sample mean and margin of error..
Q: Which of the following statements best describes the % confidence that the sample intervals in…
A: It can be observed that 10 samples are taken from the population and confidence interval are formed…
Q: Use the given confidence interval to find the margin of error and thr sample mean. (5.42, 8.56)
A: Obtain the value of margin of error using the confidence limits. The value of the margin of error…
Q: Construct the 95% confidence interval estimate of the population proportion ? if the sample size is…
A: Given Data Sample Size, n = 400 Number of successes, x = 52.0 confidence level,c=…
Q: A sample of 64 was taken from a population, with the mean of the sample being 25 and the standard…
A: It is given that Sample mean = 25 Sample standard deviation = 2 Sample size = 64 Confidence level =…
Q: Which of the following confidence intervals would have a wider width for the same set of data? A 90%…
A: which of the following confidence intervals would have a wider width for the same set of data?…
Q: If n=20, (x-bar)=47, and s=15, construct a confidence interval at a 99% confidence level. Assume the…
A: The sample size is 20, sample mean is 47, and sample standard deviation is 15. The degrees of…
Q: If n=200 and ˆpp^ (p-hat) =0.39, find the margin of error at a 99% confidence level
A: Find z-critical value:…
Q: Assume that a sample is being used to estimate a population mean μμ. If n = 29, x¯ = 46, and s =…
A: From the provided information, Sample size (n) = 29 Sample mean (x̅) = 46 Sample standard deviation…
Q: If X=72, σ=13, and n=66, construct a 95% confidence interval estimate of the population…
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Q: Assume that a sample is being used to estimate a population mean μμ. If n = 19, x¯ = 43, and s = 3,…
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Q: A 99% confidence interval for a population mean was reported to be 140 to 150. If population…
A: It is given that the 99% confidence interval for a population mean is 140 to 150. The population…
Q: If n=41, ¯x=39, and s=16, construct a confidence interval at a 99% confidence level. Assume the data…
A: Given that Sample size (n) = 41 Sample mean (x¯) = 39 Sample standard deviation (s) = 16 Confidence…
Q: Find and interpret the 95% confidence interval for μ, if ¯y = 70 and s = 10, based on a sample size…
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Q: For a population data set, σ=12.6. How large a sample should be selected so that the margin of error…
A:
Q: Use the given confidence interval to find the margin of error and the sample mean. (4.81, 8.09)
A: The confidence interval is given by (4.81, 8.09)
Q: For a population data set, σ = 13.0 . How large a sample should be selected so that the margin of…
A: Given, As per z-distribution table, the zcrit value for 96% confidence level is obtained as 2.05.
Q: 2.13 The t-value that would be used to construct a 99% confidence interval for the mean with a…
A: We have given that Sample size = n= 17 , 99% confidence So, level of significance = alpha = 0.01…
Q: 1) Construct a 95% confidence interval estimate for the population mean given that s =30 , x = 45…
A: Note: As per the guidelines, only first question has been solved here. Given data: Sample size, n =…
Q: As the sample size gets smaller, what happens to the width of your confidence interval? O Wider /…
A: A confidence interval is an interval with a certain probability that a parameter will fall between…
Q: If a confidence interval for the mean is (38≤μ≤89)(38≤μ≤89), a) What is the point estimate? b)…
A: Given, Lower bound = 38 Upper bound = 89
Q: If n=570 and ˆpp^ (p-hat) =0.89, find the margin of error at a 95% confidence levelGive your answer…
A: It is given that the value of n is 570, p hat is 0.89 and the confidence level is 0.95.Here,
Q: If X=68, σ=14, and n=66, construct a 95% confidence interval estimate of the population mean, μ
A:
Q: If X-bar = 125, σ = 24, and n = 36, construct a 99% confidence interval estimate for the population…
A: Given: X-bar = 125, σ = 24, n = 36.
Q: If [1740, 1850] is a confidence interval for a population mean. Find the margin of error. Select…
A:
Q: If you obtained one thousand 95% confidence intervals for a population mean, μ, roughly how many of…
A: A 95% confidence interval means that if we take 100 different samples and determine a 95% confidence…
Q: Example : In the group of 345 children surveyed, the sample mean was 11.3 and the standard deviation…
A:
Q: You are told that a 95% confidence interval for the population mean is 17.3 to 24.5. If the…
A: we have to identify true or false.
Q: if n = 42, p = 0.6 then construct the 98% confidence interval for the population proportion.
A:
Q: If n=25, ¤=30, and s=7, construct a confidence interval at a 98% confidence level. Assume the data…
A: It is given that sample mean is 30, sample size is 25 and the sample standard deviation is 7.
Q: Use the given confidence interval to find the margin of error and the sample mean. (13.5,21.9)
A: Given confidence interval (13.5, 21.9)
Q: create a 90% confidence interval for the following data: x = 25 n = 100
A: Here we need to construct a 90% confidence interval.
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