From the given information in each case below, state what you know about the P-value for a chi-square test and give the conclusion for asignificance level of a = 0.01. Use Table 8 in Appendix A.(a) x² = 7.65, df = 20.01Conclusion:○ Reject Ho* < P-value < 0.025Fail to reject Ho(b) x2 13.06, df = 60.025Conclusion:× < P-value < 0.05×Reject HoFail to reject Ho(c) x² = 17.73, df = 90.025Conclusion:Reject Ho× < P-value <0.05O Fail to reject Ho(d) x2P-value <19.45, df = 4Conclusion:● Reject HoO Fail to reject Ho0.05

Given the above information,Solution:Decision rule on H0:Reject H0 if p-value < αFail to reject…

Answered: From the given information in each case…

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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Please use the following information to answer question 9a & 9b: A random sample of n = 16 scores is obtained from a population with a mean of µ = 45. After a treatment is administered to the individuals in the sample, the sample mean is found to be x̅ = 49.2. 9a. Assuming that the sample standard deviation is s = 20, calculate r2 (MUST SHOW WORK FOR THIS PROBLEM). Note: You must provide calculations for the t-statistic, in addition to r2. 9b. Calculate Cohen's d to measure the size of the treatment effect (MUST SHOW WORK FOR THIS PROBLEM). Comparing your answers from 8 (a&b) and 9 (a&b), fill in the blank to properly describe how the variability of scores in the sample influence the measures of effect size. (8. A random sample of n = 16 scores is obtained from a population with a mean of µ = 45. After a treatment is administered to the individuals in the sample, the sample mean is found to be x̅ = 49.2. 9. A random sample of n = 16 scores is obtained from a…
When using an independent samples t-test, the author of a journal article reported that t(30) = 3.60, p < .05. Should the researcher reject the null or fail to reject the null?
You wish to test the following claim (H) at a significance level of a = 0.01. H.:p = 0.61 Ha:p + 0.61 You obtain a sample of sizen = 645 in which there are 424 successful observations. What is the critical value for this test? (Round answer to three decimal places.) critical value = ± %3D What is the test statistic for this sample? (Do not round in between steps. Round only at the end to three decimal places.) test statistic
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You wish to test the following claim (Ha) at a significance level of α=0.01. Ho:μ=88.9Ha:μ>88.9 You believe the population is normally distributed, but you do not know the standard deviation. You obtain a sample of size n=17 with mean ¯x=98.1 and a standard deviation of s=18.9 What is the test statistic for this sample? test statistic = Round to 3 decimal places What is the p-value for this sample? p-value = Round to 4 decimal places.
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Much is still to be learned about the relationship between sound frequency and loudness. One way to study this relationship is to have listeners perform loudness judgments for tones of different frequencies. For each listener, the output of these judgments is a number, measured in sones, that gives the loudness of the tone relative to the loudness of a reference tone. You have in front of you data from an experimental study in which 54 listeners were asked to perform such loudness judgments for tones of various intensities and frequencies. Of these 54 listeners, 18 had normal hearing, 18 used hearing aids, and 18 had some hearing loss at low frequencies (but didn't use hearing aids). Here is a summary of the data obtained for a 50 dB SPL, 500-Hz tone (the data are the sone values corresponding to this tone). Sample size Sample Sample variance Groups mean Normal hearing 18 2.52 0.3 Hearing aid 18 2.23 0.3 Some hearing loss 18 1.97 0.2 Send data to calculator Send data to Excel
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