The following statistics are calculated by sampling from four normal populations whose variances are equal: (You may find it useful toreference the t table and the g table.)al = 156, n1 = 5; a2 = 161, ng = 5; 3 = 150, n3 = 5; x4 = 141, n4 = 5; MSE = 44.3a. Use Fisher's LSD method to determine which population means differ at a = 0.05. (Negative values should be indicated by a minussign. Round final answers to 2 decimal points.)Population MeanDifferencesCan we conclude that thepopulation means differ?Confidence IntervalP1 - 421 - 13P1- H4P2 - P3H2 - H4P3 - 44b. Use Tukey's HSD method to determine which population means differ at a = 0.05. (If the exact value for m -c is not found in thetable, then round down. Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.)Population MeanDifferencesCan we conclude that theConfidence Intervalpopulation means differ?H1 - 42P1 - P3P1 - H4P3 - P4c. Do all population means differ?O No, only some of the population means differ.O Yes, all population means differ.O No, none of the population means differ.

a) To perform this test, we first calculate the following test statistic: LSD=tα2,df×MSE×1ni+1nj…

Answered: following statistics are calculated by…

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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Data on the fuel economy of several 2010 model vehicles are given in the accompanying table. Complete parts (a) and (b) below. Click the icon to view the table of fuel economy data. a) Find and interpret a 95% confidence interval for the gas mileage of 2010 vehicles. Select the correct choice below and fill in the answer boxes within your choice. (Round to two decimal places as needed. Use ascending order.) OA. 95% of all cars like the ones in the sample have gas mileages between mpg and mpg. mpg and mpg. OB. One is 95% confident that the gas mileage of a randomly selected car like the ones in the sample is between OC. One is 95% confident that the true mean gas mileage for cars like the ones in the sample is between D. The true mean gas mileage for cars like the ones in the sample is between mpg and mpg 95% of the time. mpg and mpg. b) Does this confidence interval capture the mean gas mileage for all 2010 vehicles? Choose the correct answer below. 4 OA. There is a 95% chance that…
Assume that a sample is used to estimate a population proportion p. Find the 98% confidence interval for a sample of size 257 with 50% successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places.C.I. =
Find the sample size needed to estimate the percentage of adults who can wiggle their ears. Use a margin of error of 2 percentage points and use a confidence level of 95%. Complete parts (a) and (b) below. a. Assume that p and q are unknown. р n= (Round up to the nearest integer.) b. Assume that 21% of adults can wiggle their ears. n= (Round up to the nearest integer.)
Consider the simple random sample of vehicle speeds below. Use the data to construct 3 different confidence intervals. We'll keep the sample size constant and vary the level of confidence, amd note the pattern that appears. Round results to 1 decimal place. * = 63 mph s = 10 mph n = 50 1. Construct the 80% confidence interval for vehicle speeds. 2. Construct the 90% confidence interval for vehicle speeds. 3. Construct the 99% confidence interval for vehicle speeds In 1- 2 complete sentences describe the effect increasing the level of confidence on the confidence interval.
Please answer question a, b and c
Use the confidence level and sample data to find a confidence interval for estimating the population μ. Round your answer to two decimals. 13) A random sample of 100 individuals, their blood glucose level has been measured, obtaining a mean of 120 mg/dl and a standard deviation of 30 mg/dl. a) What is the best point estimate of the population mean? b) Construct a 95% confidence interval for the mean blood glucose level of all individuals in this population.
Use the following data set: 40, 33, 77, 12, 23, 56, 23, 19, 29 (minutes). Assume the data is approximately bell shaped and a sample.
Use the sample data and confidence level given below to complete parts (a) through (d). A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n = 1004 and x = 544 who said "yes." Use a 90% confidence level. Click the icon to view a table of z scores. a) Find the best point estimate of the population proportion p. (Round to three decimal places as needed.) Standard Normal (z) Distribution Z 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 12 .00 5000 5398 .5793 .6179 .6554 .6915 .7257 .7580 .7881 .8159 .8413 .8643 .8849 0022 0 Z Cumulative Area from the LEFT .01 .5040 .5438 .5832 .6217 .6591 .6950 .7291 .7611 .7910 .8186 .8438 .8665 .8869 0040 .02 .5080 .5478 .5871 .6255 .6628 .6985 .7324 .7642 .7939 .8212 .8461 .8686 .8888 POSITIVE Z Scores ՈՈՐԸ .03 .5120 .5517 .5910 .6293 .6664 .7019 .7357 .7673 .7967 .8238 .8485 .8708 .8907 anon .04 5160 .5557 .5948 .6331 .6700 .7054 .7389 .7704 .7995 .8264 .8508 .8729 .8925 0000 .05 .5199 5596 .5987…
7. use the given confidence interval to find the margin of error and the sample proportion. a. (0.719,0.745) b. (0.753,0.777)
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following statistics are calculated by sampling rence the itable and the g table.) 156, n1 = 5; 2 = 161, n2 = 5; 3 = 150, n3 se Fisher's LSD method to determine which po Round final answers to 2 decimal points.) ppulation Mean Confidence Interval