Answered: For a repeated-measures t-test, what is…

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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I dont need direct answer , please explanation ill like ,nit handwritten
The manufacturer claims that your new car gets 28 mpg on the highway. You suspect that the mpg is more for your car. The 66 trips on the highway that you took averaged 32 mpg and the standard deviation for these 66 trips was 10.9 mpg. What can be concluded at the αα = 0.05 level of significance? For this study, we should use Select an answer t-test for a population mean z-test for a population proportion Correct The null and alternative hypotheses would be: H0:H0: ? p μ CorrectSelect an answer ≤ = ≥ ≠ Ha:Ha: ? μ p CorrectSelect an answer = < > ≠ The test statistic ? z t Correct = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.) The p-value is ? ≤ > Correct αα Based on this, we should Select an answer accept fail to reject reject Incorrect the null hypothesis. Thus, the final conclusion is that ... The data suggest that the sample mean is not significantly more than 28 at αα = 0.05, so there is…
In a test of Ho:= 90 against Ha: µ> 90, the sample data yielded the test statistic z = 2.17. Find and interpret the p-valte for the test. E Click the icon to view a table of standard normal values The p-value isp= (Round to three decimal places as needed.)
Consider statistics on plasma levels for a random sample of nine 17 year old males and six 17 year old females. Test if two means different, µ1≠µ2, at 5%. Hint. Use a degrees of freedom of 5. Male Female Sample size 9 6 Sample mean 3.259 1.413 Sample standard deviation 0.4 0.22 a. At the 0.05 level of significance, the data provide sufficient evidence to conclude that average male plasma amount is not different from the average female plasma amount. b. At the 0.05 level of significance, the data provide insufficient evidence to conclude that average female plasma amount is equal to the average male plasma amount. c. At the 0.05 level of significance, the data provide sufficient evidence to conclude that average male plasma amount is different from the average female plasma amount. d. At the 0.05 level of significance, the data provide insufficient evidence to conclude that average male plasma amount is different from the average female plasma amount.
Nonparametric: A small study is conducted to compare birth weight in babies born to mothers who do not smoke to those that smoke more than ½ pack/day. Is there a significant difference between birth weights due to maternal smoking status? Use the Mann-Whitney U test with a 5% level of significance. What is U1 (non-smokers)? Birth weights of infants in two groups of mothers. (Observed data) Nonsmokers Heavy Smokers (≥1/2 pack/day) 8.6 7.0 8.5 5.2 6.3 6.1 9.3 6.7 8.0 6.6 6.8 7.4 4.9 6.3
You wish to test the following claim (Ha) at a significance level of a Hd = µ2 – Hl¡ where the first data set represents a pre-test and the second data set represents a post-test. = 0.01. For the context of this problem, %3/ Ha: Hd 7 0 0 = Prl :°H You believe the population of difference scores is normally distributed, but you do not know the standard deviation. You obtain pre-test and post-test samples for n = 61 subjects. The average difference (post - pre) is d deviation of the differences of sd = 22.6. = 4.3 with a standard What is the critical value for this test? (Report answer accurate to three decimal places.) critical value = ± %3D What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = %3D
You are conducting a study to see if the probability of a true negative on a test for a certain cancer is significantly less than 0.69. Your sample data produce the test statistic z=−2.7788. Find the p-value accurate to 4 decimal places. H0:μ=25.365H1:μ>25.365Your sample consists of 37 subjects, with a mean of 25.8 and standard deviation of 4.07.Calculate the test statistic, rounded to 2 decimal places.
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The FleetFoot Shoe company claims that the average yearly salary of its workers is $29,800. The Union believes that the average is much less. A random sample of 57 employees shows their average salary to be $29,500 with a population standard deviation of $1200. Test the hypothesis using a 3% level of significance. Using the classical approach: (Step 4) Find the Z-value: -1.89 -1.90 -1.87 -1.88
You wish to test Ho: Md = 0 versus Ha:μd 0 at a significance level of 0.10. For the context of this problem, d = μ₂ μ₁ where the first data set represents a pre-test and the second data set represents a post-test. You obtain pre-test and post-test samples for na 25 subjects. The average difference (post-pre) is d 7 with a standard deviation of the differences of sd = 11.6. = Round your answers to three decimal places, and round any interim calculations to four decimal places. What is the test statistic? =

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For a repeated-measures t-test, what is the null hypothesis? Select one: a. ​ µD = 0 b. ​ MD = 0 c. ​ µ1 = 0 d. ​ M1 = µD

For a repeated-measures t-test, what is the null hypothesis? Select one: a. µD = 0 b. MD = 0 c. µ1 = 0 d. M1 = µD