Based on goodness-of-fit measures, which is the preferred model based on the results below?Model 1Model 2Model 3Standard error ofthe estimate SeCoefficient of6,498.4419 5,946.7042 5,789.4569determination R2Adjusted R20.29340.40230.42880.29020.38900.4187Multiple ChoiceModel 1ОModel 2ОModel 3ОBoth Model 1 and Model 2

The model 3 has the highest R2 and adjusted R2 of 0.4288 and 0.4187, respectively. The model 3 has…

Answered: Based on goodness-of-fit measures,…

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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Enumerate TWO reasons for why Pratt-Arrow measures are useful.
Based on goodness-of-fit measures, what is the percentage of the sample variation unexplained by Model 2? Model 1 Model 2 Model 3 Standard error of the estimate Se 6, 204.9086 5,614.9849 5,818.1321 Coefficient of determination R2 0.8262 0.5931 0.0415 Adjusted R2 0.3855 0.9980 0.3730 Multiple Choice 59.31% 99.80% 37,30% 40.69%
Do you think that using a margin of error greater than 5 percent is acceptable when conducting a research study on the poor performance of students at a specific university? Give reasons for your answer and support it with evidence.
Type size Mean S.D. I 10 136.7 4.5 II 15 138.3 4.6 7. | find the 98% econfidence interval for the difference of mean fabric strengths for the two types using a pooled interval. Interpret your answer.
Traditional Students (G1) Online Students (G2) mean 2.97 2.95 standard deviation 0.34 0.35 sample size 33 22 significance level: 0.05 degree of freedom: 53 a) what is the t-statistic? Show calculations b) what is the p-value? Show calculations
1. Why do result of population mean and mean of sample means differ? 2. Why do results of population standard deviation and standard deviation of sample means differ?
Using this critical values table and the critical data set pictured please answer the blanks in the question below.3 0.997 4 0.950 5 0.878 6 0.811 7 0.754 8 0.707 9 0.666 10 0.632 11 0.602 12 0.576 13 0.553 14 0.532 15 0.514 16 0.497 17 0.482 18 0.468 19 0.456 20 0.444 21 0.433 22 0.423 23 0.413 24 0.404 25 0.396 26 0.388 27 0.381 28 0.374 29 0.367 30 0.361 n
23
In a sampling distribution of means, variation is measured using what? OZ score Standard Error O Confidence Intervals O Mean of Means
To determine whether there is a significant difference in the weights of boys and girls beginning kindergarten, random samples of 50 boys and 50 girls aged 5 years produced the following information. Mean Standard Deviation Sample Size Boys 43.5 lb 6.8 50 Girls 38.7 lb 3.5 50 (a) What is the point estimate of the difference in the average weights for 5-year old boys and girls? (Use ?Boys − ?Girls.) lb What is the 95% margin of error for the point estimate you found? (Round your answer to three decimal places.) lb (b) What is the 98% confidence interval estimate of ?Boys − ?Girls? (Round your answers to two decimal places.) lb to lb
on my sample i asked 45 people 18 said yes 27 said noi already answerd question 1 and 2 i just need 3,4,5 please use calculator method to work out with a ti83,or 84 ESTIMATION OF A POPULATION PROPORTION project Choose a topic in which to solicit count data. Please check with the instructor for approval before taking your data. You may do this project alone or with another person in the class. Take a sample of 30 from the population in which you are concerned. If possible, make your sample a SRS (simple random sample). Then present the following information for your project: State the topic your project is about and the audience surveyed. State the exact question you asked in your survey. Compute the proportion for your sample. Show your computation. Find a 95% confidence interval for p. What is the margin of error for this confidence interval? What is the meaning of this interval with respect to your data and project? Construct and perform a hypothesis test for p at the…
A survey information given below, Sample mean = 5.5, s=2.517, df-8 and confidence level 95% (coresponding test statistic value is 2.303). Based on this information answer the folowing: Which test is appropriate, z-test or t-test? Type either "z-test" or "t-test" A What was the sample size? A Calculate the margin of error. (Report two decimal point, #.##) A Calculate the confidence interval-write lower and uppler value using comma ",". (Report two A If the df decimal point: #.##, #.##) increases to 30 then what will impact on the margin of error? Write either "increase" A If the df or "decrease" or "no change" increases to 30 then what will impact on the confidence interval? Write either "wide" or "narrow" or "no change"

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