.. .............. ..............The method of tree-ring dating gave the following years A.D. for an archaeological excavation site. Assume that the population of x values has an approximately normal.... ........... ........... .......... ..............distribution.1,292 1,257 1,292 1,236 1,268 1,316 1,275 1,317 1,275n USE SALT(a) Use a calculator with mean and standard deviation keys to find the sample mean year x and sample standard deviation s. (Round your answers to four decimal places.)X =A.D.S =yr(b) When finding an 90% confidence interval, what is the critical value for cofidence level? (Give your answer to three decimal places.)What is the maximal margin of error when finding a 90% confidence interval for the mean of all tree-ring dates from this archaeological site? (Round your answer to thenearest whole number.)E =Find a 90% confidence interval for the mean of all tree-ring dates from this archaeological site. (Round your answers to the nearest whole number.)A.D.lower limitA.D.upper limitSubmit AnswerNOV21MacBook Pro

Given data : 1,292 1,257 1,292 1,236 1,268 1,316 1,275 1,317 1,275

Answered: distribution. 1,292 1,257 1,292 1,236…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Complete parts a through d
Find the left and right chi square values, then give the confidence interval. Sample Variance s = 14.6 Confidence Level c = 0.90 and Sample Size n = 22 Left Right 1+c1- c Level of Significance a Degrees of Freedom n-1 Confidence Interval for Variance o (n – 1)s² (n – 1)s? XR and XR %3D %3D At the 90 % level of confidence the population variance is between and (Round all answers to 3 decimal places)
es A sample of 12 fossil skeletons of an extinct species of bird has been collected. The mean length of the skulls in this sample is 5.29 cm and the standard deviation of the sample is 0.21 cm. Assuming that such measurements are normally distributed, find a 90% confidence interval for the population mean length of the skulls of this species of bird. You may want to use one of these: qt (p-0.10, df-11, lower. tail-FALSE)=1.36343 qt(p-0.05, df-11, lower.tail-FALSE) =1.795885 qnorm(0.10, mean-0, sd-1, lower.tail-FALSE)=1.281552 qnorm(0.05, mean-0, sd-1, lower.tail=FALSE)=1.644854 O (4.945, 5.635) O (4.913, 5.667) O (5.021, 5.559) O (5.181, 5.399)
The method of tree-ring dating gave the following years A.D. for an archaeological excavation site. Assume that the population of x values has an approximately normal distribution. 1,285 1,187 1,285 1,285 1,285 1,306 1,320 1,285 (a) Find the sample mean year x and sample standard deviation s. (Round your answers to four decimal places.) x = A.D.s= yr (b) When finding an 85% confidence interval, what is the critical value for confidence level? (Give your answer to three decimal places.) tc = What is the maximal margin of error when finding a 85% confidence interval for the mean of all tree-ring dates from this archaeological site? (Round your answer to the nearest whole number.) E = Find a 85% confidence interval for the mean of all tree-ring dates from this archaeological site. (Round your answers to the nearest whole number.) lower limit A.D.upper limit A.D. The method of tree-ring dating gave the following years A.D. for an archaeological excavation site.…
Questions A solution of an unknown carbohydrate gave the following optical readings when analyzed by a polarimeter +3.24, +3.15, +3.30, +3.20, k3.21, +3.19, +3.17, +3.23, +3.20, +3.25. (a) Calculate the sample mean. (b) Calculate the standard deviation. (c) Calculate the 95% confidence levels for the measurement. 1.
Trap spacing measurements (in meters) for a sample of seven teams of red spiny lobster fisherman are reproduced in the accompanying table. Let u represent the average of the trap spacing measurements for the population of red spiny lobster fisherman. The mean and the standard deviation of the sample measurements are x = 91.4 meters and s = 12.2 meters, respectively. Suppose you want to determine if the true value of µ differs from 95 meters. Complete parts a through h below. μ 94 100 108 97 83 71 87 a. Specify the null and alternative hypotheses for this test. OA. Ho: μ = 95 Ha: μ 95 d. Find the approximate p-value of the test. OD. Ho: μ = 95 H₂:μ #95 a MacBook Pro Next
A population of values has an unknown distribution with μ=109.2μ=109.2 and σ=15.3σ=15.3. You intend to draw a random sample of size n=88n=88.What is the mean of the distribution of sample means?μ¯x=μx¯= ____________ (Please enter an exact answer.)What is the standard deviation of the distribution of sample means?σ¯x=σx¯=_____________ (Please report your answer accurate to 2 decimal places.)
Answer the exercise of the image. (In the other image are the final answers, this to verify the final answer).
Interstate Speeds It has been reported that the standard deviation of the speeds of drivers on Interstate 75 near Findlay, Ohio, is 8 miles per hour for all vehicles. A driver feels from experience that this is very low. A survey is conducted, and for 29 drivers the standard deviation is 9.1 miles per hour. At =α0.05, is the driver correct? Assume the variable is normally distributed. (a)State the hypotheses and identify the claim with the correct hypothesis.
H8.
HW Score: 0%, 0 of 8 points O Points: 0 of 1 Part 1 of 2 A population has a mean u=79 and a standard deviation o = 8. Find the mean and standard deviation of a sampling distribution of sample means with sample size n= 64. H: = (Simplify your answer.)
For the provided sample mean, sample size, and population standard deviation, complete parts (a) through (c) below. Assume that x is normally distributed. x=31 n=9 σ=6 a. Find a 95% confidence interval for the population mean. The 95% confidence interval is from _______ to __________. (Round to two decimal places as needed.) b. Identify and interpret the margin of error. The margin of error is ___________ (Round to two decimal places as needed.) Interpret the margin of error. Choose the correct answer below. A. We can be 95% confident that the population mean, μ, is within the margin of error of the sample mean, 31. B. We can be 95% confident that any possible value of the variable is within the margin of error of the sample mean, 31. C. We can be 95% confident that any possible value of the variable is within the margin of error of the population mean, μ. D. We can be 95% confident that any possible sample mean is within the…

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