If n=16, ī = 35, and s=8, find the MARGIN OF ERROR at a 99% confidence level Recall: M.O.E. = t* · Vn Give your answer to two decimal places.

Q: For a confidence level of 99% with a sample size of 30, find the critical t value. Round to 3…

A: Given : n = 30 degrees of freedom = n - 1 degrees of freedom = 30 - 1    degrees of freedom = 29…

Q: Calculate the confidence intervals for 100 mg/L cholesterol at 90% and 95% confidence levels.…

A: Given Information: x=100 mg/L Confidence levels = 90% and 95% and the z-values for various…

Q: A student was asked to find a 98% confidence interval for widget width, in mm, using data from a…

A: The 98% confidence interval for weight width is 10<μ<31.1. When repeated samples are taken,…

Q: The t value for a 95% confidence interval estimation with 28 degrees o freedom is 2.467 O 2.052 O…

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Q: A sample of size 85 from a population having standard deviation o = 45 produced a mean of 254.00.…

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Q: A 95% confidence interval for the weight of a small package of M&Ms is (47.82, 48.16) grams. Based…

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Q: A random sample of size n = 30, taken from a large population with a standard deviation σ = 5, has a…

A: Given data A random sample of size n=30 taken from a large population with standard deviation 5 and…

Q: Based on a sample of 50 textbooks at the store, you find an average of 90.52 and a standard…

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Q: given n=31 , s=7, Xbar= 14 for an 80% confidence interval find,  standard error margin of error

A: From the given information, the sample size is n=31, the sample mean is x-bar=14 and the sample…

Q: If n = 16, = 46, and s = 17, construct a confidence interval at a 90% confidence level. Assume the…

A: Given n=16 X-bar=46 S=17

Q: If n=13, (x-bar)=D49, and s-13, construct a confidence interval at a 98% confidence level. Assume…

A: Given problem Given that   n = 13 x-bar = 49 s = 13 Degree of freedom, df = 13 - 1 Degree of…

Q: A sample of size 10 has a sample mean of 1000. Knowing that o?=100, then a 95% Confidence Interval…

A: We want to find confidence interval Here z will be used as population standard deviation is known

Q: Construct the confidence interval for the population mean µ. c = 0.95, x= 9.6, o = 0.7, andn=47 A…

A: Given,sample size(n)=47sample mean(x¯)=9.6population standard deviation…

Q: Find the a/2 (the area in one tail outside of the confidence interval) and the critical value z a…

A: In question,  We'll find the z critical value for one tailed at 90% confidence level. The solution…

Q: If n = 22, ¯xx¯ = 44, and s = 11, construct a confidence interval at a 95% confidence level. Assume…

A: Obtain the 95% confidence interval for the population mean. The 95% confidence interval for the…

Q: Identify the t-score for a 90% confidence interval if the sample size is 25. t = The answer isnt…

A: We have given that Confidence level (c) = 90% = 0.90 Significance level (α) = 1 - c = 1 - 0.90 =…

Q: A simple random sample of 60 items resulted in a sample mean of 80. The populationstandard deviation…

A: Sample size = n = 60, Sample mean = = 80, Population standard deviation = s = 15, Confidence…

Q: and x for the given confidence level c and sample size n. ecimal places as needed.)

A: Given

Q: If n=490 and ˆpp^ (p-hat) =0.4, find the margin of error at a 90% confidence level Give your answer…

A: Given that, n = 490 p^=0.4 90% confidence level

Q: find the t/α2 value for a 98% confidence interval for the mean when the sample size is 39.  t/α2=

A: The objective is to find the critical value for 98% confidence interval for the mean.

Q: For a confidence level of 94% for a mean with n = 19, find the critical value t.Enter the answer to…

A: Given that, n = 19, c= 94% The degree of freedom is,

Q: A 95% confidence interval forp is given as (0.34,0.66). How large was the sample used to construct…

A: Formula for the sample size needed to estimate a population proportion is

Q: A 95% confidence interval for a population mean was reported to be 152 to 160. If o = 15. what…

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Q: If n = 28, = 38, and s 17, construct a confidence interval at a 99% confidence level. Assume the…

A: Given information- Sample size, n = 28 Significance level, α = 0.01 Sample mean, x-bar = 38 Sample…

Q: If n = 17, ¯xx¯ = 33, and s = 6, construct a confidence interval at a 99% confidence level. Assume…

A: We have, If n = 17, x¯ = 33, and s = 6, alpha=1-0.99= 0.01 Therefore  Degrees of freedom= n-1=16…

Q: a sample of n=16 scores has mean of M=58 with SS=540. Use the sample to construct the 95% confidence…

A: Solution: From the given information, n=16, M=58 and SS=540.

Q: What is tα/2,df for a 95% confidence interval of the population mean based on a sample of 15…

A: Solution: We have to find the t-critical value (tα/2) at the given significance level 1- 0.95=0.05…

Q: A sample of size 26 has a sample variance of 100. Then a 90% Confidence Interval for o? is < o? <

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Q: If n=15, 7(x-bar)=50, and s-7, construct a confidence interval at a 80% confidence level. Assume the…

A: Sample mean =50Sample standard deviation = 7Sample size = 1580% confidence level

Q: Based on a sample of 80 textbooks at the store, you find an average of 58.24 and a standard…

A: The best estimate which is given for a population parameter is known as "point estimate". As from…

Q: Find the value of ta for a 99% confidence interval when sample size is 30. n = 45, s² = 23.5,90%…

A: Sample size is n=30 Significance level α=0.01 df=n-1=30-1=29tα2=t0.012=t0.005=3.038,         From…

Q: If we want a 96% confidence interval on population mean with a sample size of 23, find zα2 or tα2

A: It is given that the confidence level is 96%.

Q: What is the value of tα/2 for a sample of size n=39 at the 90% level of confidence?

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Q: In a recent poll, 390 people were asked if they liked dogs, and 8% said they did. Find the margin of…

A: n=390 p = 8%

Q: Use the Student's t distribution to find te for a 0.95 confidence level when the sample is 29. Step…

A: Given that the sample size is 29 and the confidence level is 0.95. That is, c=0.95 and n=29…

Q: If n = 18, = 44, and s= 3, construct a confidence interval at a 98% confidence level. Assume the…

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Q: A 95% confidence interval for is I D. (Round to one decimal place as needed.)

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Q: A sample of 22 picture tubes is tested and the current needed to achieve the brightness is measured.…

A: We need to construct the 95%  upper end point of confidence interval for the population mean μ. The…

Q: Find the critical value t α 2corresponding to a 99% confidence level, given that the sample has size…

A: Using t-table: Refer t-distribution table and look for t value corresponding to degrees of…

Q: Given that you need to construct a 90% confidence interval, having 12 measurements, and you don't…

A: The confidence level is c = 0.90.

Q: A sample of size n=49 is drawn from a popular whose standard deviation is q=4.8. a. Find the margin…

A: Introduction:The 100 (1 – α) % confidence interval for the population mean, μ, for given population…

Q: If n=31, (x-bar)3D49, and s-3, construct a confidence interval at a 80% confidence level. Assume the…

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Q: The heights of the 1320 lower school students at Poole High School are normally distributed with…

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

Q: Round to three decimal places. For a confidence level of 99%, find the critical z

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Q: In the SQF dataset, the sample proportion of the those stopped by police who are Black is 53%. The…

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Q: A random sample of size 100 is taken from a normal distribution population with sigmma=4.3. give…

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Q: 1. Find Z if: a= 0.05. 1. Find Z for the value comesponding to significanl (confidence) level of…

A: Solution: 1) Solution: To find z critical score value at α=0.05.

Q: Find the value of ta/2 given a. 37 for the 85% confidence interval for the mean b. n = 15 for the…

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Q: Find the a/2 ( the area in one tail outside of the confidence interval) and the critical value z a/2…

A: The confidence level is 0.80.