Use the given information to find the number of degrees of​ freedom, the critical values χ2L and χ2R​, and the confidence interval estimate of σ. It is reasonable to assume that a simple random sample has been selected from a population with a normal distribution. Platelet Counts of Women 98​% ​confidence; n=24​, s=65.9.   X2L=(round to 3 decimals) X2R=(round to 3 decimals) confidence interval estimate of σ=

Q: If n = 24, ¯xx¯ = 30, and s = 3, construct a confidence interval at a 98% confidence level. Assume…

A: Given: x~N(μ,σ)n=24x¯=30s=3α=0.02

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: Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a)…

A: Given : Population standard deviation is not known.

Q: Best estimate = i Margin of error = Confidence interval: i to i

A:

Q: If n = 11, ¯xx¯ = 40, and s = 17, construct a confidence interval at a 98% confidence level. Assume…

A:

Q: In a random sample of 29 ​people, the mean commute time to work was 32.9 minutes and the standard…

A:

Q: Find the critical value to for the confidence level c = 0.98 and sample size n = 16. Click the icon…

A: given data, c=0.98α=1-0.98=0.02n=16df=n-1=16-1=15tc=?

Q: If n=27, ¯xx¯(x-bar)=39, and s=2, construct a confidence interval at a 95% confidence level. Assume…

A:

Q: 40- Assume that we want to construct a confidence interval. Do one of the following, as appropriate:…

A: The number of player salaries (n) is 67.

Q: 8. A random sample of size n is drawn. The sample mean, X, is found to be 15.5, and the sample…

A: The sample mean  x¯=15.5 The sample standard deviation  s=3.6 The confidence level is 0.95 a) The…

Q: If n=32, x(x-bar)=47, and s=18, construct a confidence interval at a 99% confidence level. Assume…

A: Given that  Sample size n =32 Sample mean =47 Standard deviation =18

Q: If n=14, ¯xx¯(x-bar)=44, and s=9, construct a confidence interval at a 98% confidence level. Assume…

A: Given data  ; n =14 , x̄ = 44 , Standard  deviation (s) = 9 To construct 98 % confidence interval.

Q: A 90% confidence interval for u - Hz using the sample results = 9.8, s1 = 2.2,n1 = 50 and x2 = 12.6,…

A: We need to construct the 90% confidence interval for the difference between the population means…

Q: If n=13, ¯xx¯(x-bar)=31, and s=17, construct a confidence interval at a 99% confidence level. Assume…

A: Given data: Sample size, n = 13  Sample mean, x¯=31 Sample standard deviation, s = 17 The degree of…

Q: where o n₁+n₂-2 Enter the endpoints of the interval. <H₁-H₂(Round to the nearest integer as needed.)…

A: It is given that x̄1 = 1866,   x̄2 = 1683s1 = 150,   s2 = 197n1 = 10,   n2 = 8

Q: Determine the t-score for a 99% confidence interval for a population mean from a sample of size 8.

A: Confidence level 99%  with sample size n=8 then to find t-score for the 99% confidence interval

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: If n = 16, ¯xx¯ = 32, and s = 10, construct a confidence interval at a 80% confidence level. Assume…

A: We have given that,  Sample mean (x̄) = 32, sample size (n) = 16 and standard deviation (s) = 10…

Q: The number of days marathon runners practice before an event are normally distributed with an…

A: The confidence level is 99%. The level of significance is 1 – confidence level = 1 – 0.99 = 0.01.…

Q: A random sample of elementary children is to be selected to estimate the proportion p who have…

A:

Q: Body Mass Index: In a survey of adults with diabetes, the average body mass index (BMI) in a sample…

A:

Q: Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a)…

A:

Q: If n = 16, ¯xx¯ = 45, and s = 11, construct a confidence interval at a 99% confidence level. Assume…

A:

Q: If n=31, ¯xx¯(x-bar)=45, and s=8, construct a confidence interval at a 99% confidence level. Assume…

A: Given: n=31x¯=45s=8

Q: If n = 28, ¯xx¯ = 45, and s = 20, construct a confidence interval at a 80% confidence level. Assume…

A:

Q: If X=117, o=24, and n = 30, construct a 99% confidence interval estimate of the population mean, μ.…

A: GivenMean(x)=117standard deviation(σ)=24sample size(n)=30Confidence level=99%

Q: Use the t-distribution to find a confidence interval for a difference in means μ1-μ2 given the…

A: Assume the results come from random samples from populations that are approximately normally…

Q: A sample of 72 is taken from a large population. The sample mean is 60 and the sample standard…

A:

Q: If n = 28, ¯xx¯ = 37, and s = 6.2, construct a confidence interval at a 97% confidence level. Assume…

A:

Q: Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a)…

A: As the population standard deviation σis known, and the sample size is also greater than 30, we will…

Q: A simple random sample of size n = 20 is drawn from a population that is normally distributed. The…

A:

Q: If n = 20, ¯xx¯ = 47, and s = 9, construct a confidence interval at a 90% confidence level. Assume…

A: The degrees of freedom is, df=n-1=20-1=19 The degrees of freedom is 19. Computation of critical…

Q: The waiting times​ (in minutes) of a random sample of 21 people at a bank have a sample standard…

A:

Q: Two random samples were selected independently from populations having normal distributions. The…

A: x1= 38.8 x2= 30.2 To calculate  the confidence interval.

Q: Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a)…

A: Given Information: Confidence level = 90% = 0.90 Population standard deviation = 3914 Sample size =…

Q: A simple random sample of size n = 15 is drawn from a population that is normally distributed. The…

A:

Q: Determine the t-score for a 95% confidence interval for a population mean from a sample of size 6.…

A: We have to find critical value.

Q: Use technology to construct the confidence intervals for the population variance sigmaσsquared2 and…

A: The objective of this question is to construct the confidence intervals for the population variance…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.