Show work clearly for simultaneous confidence interval for the difference of means Population 1 Population 2 Population 3 Population 412.5410.579.737.5413.8411.3410.749.149.7413.579.714.74Construct an ANOVA table to assess the null-hypothesis that all four pop-ulations have the same mean at significance level a = 0.05. Also constructsimultaneous confidence intervals for the differences of the means.

Population 1 Population 2 Population 3 Population 4 12.54 10.57 9.73 7.54 13.84 11.34 10.74 9.14…

Answered: Population 1 Population 2 Population 3…

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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The chart shows the waiting times for customers while having winte installed on their cars. Time (min) Frequency 30-35 10 35-40 16 40-45 21 45-50 17 50-55 19 55-60 8 60-65 Q6. a) (A) Use the midpoints of the intervals as the measurements, estimate the mean of the wait times. 2.
A psychologist is studying the self image of smokers, which she measures by the self-image (SI) score from a personality inventory. She would like to estimate the mean SI score, μ, for the population of all smokers. She plans to take a random sample of SI scores for smokers and estimate μ via this sample. Assuming that the standard deviation of SI scores for the population of all smokers is 82, what is the minimum sample size needed for the psychologist to be 95% confident that her estimate is within 15 of μ?Carry your intermediate computations to at least three decimal places. Write your answer as a whole number (and make sure that it is the minimum whole number that satisfies the requirements).
An experiment is conducted to compare the maximum load capacity in tons (the maximum weight that can be tolerated without breaking) for two alloys A and B It is Kknown that the two standard deviations in load capacity are equal at 7 tons each. The experiment is conducted on 50 specimens of each alloy (A and B) and the results are X = 75.8. X = 71.8, and X-X=4. The manufacturers of alloy A are convinced that this evidence shows conclusively that Hug and strongly supports the claim that their alloy is superior. Manufacturers of alloy 8 claim that the experiment could easily have given X-X 4 even if the two population means are equal. Complete parts (a) and (b) below. Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. (a) Make an argument that manufacturers of alloy B are wrong. Do it by computing P(XA-XB41 PA-HB) P(XA-X > 4) - @
The standard error of estimate is the standard deviation of the observed x-values about the predicted x values TRUE OR FALSE
The U.S. Census Bureau estimates that American workers spend and average time of 27 minutes travel time to work. The travel time to work for American workers is known to be approximately normally distributed. A random sample of 20 American workers in the Chicago metropolitan area was taken and their travel times to work were recorded. Choose the formula that should be used to calculate a confidence interval for the true mean travel time to work for American workers in the Chicago metropolitan area.
SOLVE FOR CRITICAL VALUE Two suppliers manufacture a plastic gear used in a laser printer. The impact strength of these gears measures in foot-pounds is an important characteristic. A random sample of 10 gears from supplier 1 results in x1 = 290 and s1 = 12 while another random sample of 16 gears from the second supplier results in x2 = 321 and s2 = 22. Is there evidence to support the claim that supplier 2 provides gears with higher mean impact strength. Use a =0.04, and assume that both populations are normally distributed with equal variances.Level of significance = 0.04
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While the goal of hypothesis is to test a claim (against Ho), the goal of confidence interval estimation is to estimate a parameter. True False
(c) A factory produces two types of artificial lamp A and B. The mean durability of artificial lamp A is 850 hours and its standard deviation is 40 hours. While, mean durability of artificial lamp B is 820 hours and its standard deviation is 60 hours. Find the probbality of 35 artificial lamp A will have mean durabilirty at least 25 hours more than 45 artificial lamp B.
In a factory the 95% confidence interval of the mean net weight of the chocolates produced was estimated. Based on a random sample of 400 chocolates the mean net weight is between 99 grams and 101 grams. Give the maximum error of the estimate in grams.
A local chess club claims that the length of time to play a game has a standard deviation of less than 12 minutes. Write sentences describing type I and type Il errors for a hypothesis test of this claim. A type I error will occur if the actual standard deviation of the length of time to play a game is V 12 minutes, but you the null hypothesis, A type Il error will occur if the actual standard deviation of the length of time to play a game is V 12 minutes, but you the null hypothesis,

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