When performing a x2 test for independence in a contingency table with r rows and c columns, determine the upper-tail critical value of the test statistic in each ofthe following circumstances.a. a = 0.05, r = 3, c = 5b. a = 0.01, r = 3, c = 6c. a = 0.01, r = 3, c = 4d. a = 0.01, r = 5, c = 4e. a = 0.01, r = 4, c = 3a. Determine the upper-tail critical value of the test statistic using the values given in the problem statement for part (a).The critical value is(Tuno on intogor odocimeDoun

For the upper tailed chi-square test of independence the number of rows r and columns c in the…

Answered: When performing a x2 test for…

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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Similar questions

If the sample data produce a test statistic (z-score) that is in the critical region, then which of the following is the appropriate conclusion for the test? O reject H₁ O fail to reject H₁ O fail to reject Ho O reject Ho
Sam works at the JJ Electronics Factory. JJ produces the A23 electronic component. The length, X, of an A23, is normally distributed with a meanu = 10 centimeters and a standard deviation o = 0.53 centimeters. Sam randomly selects 20 A23 components from the production line for quality control purposes and measures their lengths. Let M be the sample mean length of the measured A23 components. Let S be the total length of the measured A23 components. (i.e. sum of the 20 lengths. a) What is the probability that X 10.5? .3085 c) What is the probability that all of the 20 measurements are less than 11? .0171 d) What is the expected value of S? 200 e) What is the standard deviation of S? 2.37 f) What is the probability that S-200 >2? 1.99 g) What is the standard deviation of S-200 2.37 h) What is the expected value of M? 10 i) What is the standard deviation of M? .1187 j) What is the probability that M >10.1? .199 k) What is the standard deviation of 9M? 1.068 1) If the probability of X >k…
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?
Indicate for each which type of t test is appropriate (independent, dependent). An educator would like to assess the effectiveness of a new instructional program for reading. The control group consist of n= 4 second grade students who are provided with the traditional instruction used at school. Later these students are given the experimental instruction and measured again on reading.
In a 2005 study 2205 adolescents aged 12 - 19 years old were give a treadmill test to check their cardiovascular health. 750 of the subjects were determined to have poor cardiovascular fitness. The researchers want to claim that more than 30% of adolescents have poor cardiovascular health (with a 5% level of significance). The research hypothesis is Ha:p>0.30. Find the test statistic, p-value, and state your conclusion.
Using the z table, find the critical value (or values) for an α = .09 two-tailed test.
Are blonde female college students more likely to have boyfriends than brunette female college students? 219 of the 350 blondes surveyed had boyfriends and 220 of the 400 brunettes surveyed had boyfriends. What can be concluded at the 0.05 level of significance? H0: PBlonde = PBrunette Ha: PBlonde [ Select ] ["Not Equal To", ">", "<"] PBrunette Test statistic: [ Select ] ["Z", "T"] p-Value = [ Select ] ["0.04", "0.16", "0.08", "0.02"] [ Select ] ["Reject Ho", "Fail to Reject Ho"] Conclusion: There is [ Select ] ["insufficient", "statistically significant"] evidence to make the conclusion that blonde female college students are more likely to have boyfriends than…
The following summary data was obtained for a study on fabric strength of two types of wool. Is there enough evidence to conclude that the type I has a lower Type size Mean S.D strength than type II? Use a pooled t-test with a = 0.05. 136.7 | 4.5 138.3 4.6 I 10 II 15
Two samples of n = 5 participants each generate the following data. Calculate a t-test score for the difference of these two groups. Group 1 Group 2 2 3 3 3 2 2 2 2 1 2 t(8) = 2.86 t(8) = 2.29 t(8) = 2.5 t(8) = 1.11 Based on the results from the previous question (#7), what is the tcrit and are Group 1 and Group 2 significantly different from each other? Use α = .05, two-tailed test. tcrit = 1.860 Yes, the two groups are significantly different from each other. tcrit = 2.306 Yes, the two groups are significantly different from each other. tcrit = 2.228 Yes, the two groups are significantly different from each other. tcrit = 3.355 No, the two groups are not significantly different from each other.

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