A researcher wanted to test an association between Diabetes Status (yes, no, borderline)and Asthma Status (yes, no). Provide an Interpretation for the following output:Chi-Square TestsAsymptoticSignificance (2-Valuedfsided)Pearson Chi-Square2.8742238Likelihood Ratio2.8172245Linear-by-Linear Association8601354N of Valid Cases1750a.0 cells (0.0%) have expected count less than 5. The minimumexpected count is 15.07.Edit View Insert Format Tools12pt vParagraphTableBIUV

Based on the Chi-Square Test results we can interpret that there is no statistically significant…

Answered: A researcher wanted to test an…

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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In general, if sample data are such that the null hypothesis is rejected at the ? = 1% level of significance based on a two-tailed test, is H0 also rejected at the ? = 1% level of significance for a corresponding one-tailed test? Explain your answer. Yes. If the two-tailed P-value is smaller than ?, the one-tailed area is also smaller than ?. No. If the two-tailed P-value is smaller than ?, the one-tailed area will be larger than ?. Yes. If the two-tailed P-value is smaller than ?, the one-tailed area will be larger than ?. No. If the two-tailed P-value is smaller than ?, the one-tailed area is also smaller than ?.
A market researcher is trying to determine whether males differ from females with regard to the following question: Do you drink soft drinks? Which of the following tests would be most appropriate? Chi-square test 1-way ANOVA test Correlation analysis Median test Miller-Budweiser test
c) Check whether the assumptions of normality and variance equality are satisfied for part b of this question. Use a nonparametric test and compare your finding with that from part b. Use the residuals from the ANOVA test and include Q-Q plot and Boxplot.
A random sample of 40 companies with assets over $10 million was surveyed and asked to indicate their industry and annual computer technology expense. The ANOVA comparing the average computer technology expenses among three industries rejected the null hypothesis. The mean square error (MSE) was 211. The following table summarizes the results: Education Tax Services Food Services Number Sampled 10 14 16 Mean Expense (1,000,000s) 18 47.5 52 When comparing the mean annual computer technology expenses for companies in the tax services and education industries, which of the following 95% confidence intervals can be constructed? Multiple Choice 29.5 ± 2.026 × 6.014 29.5 ± 2.021 × 6.014 29.5 ± 2.026 × 29.96 29.5 ± 2.021 × 29.9
What are some factors to consider in "setting" an alpha level for a statistical test?
A researcher wanted to test an association between gender (male, female) and Asthma Status (yes, no). Provide an Interpretation for the following output: Chi-Square Tests Value df Asymptotic Significance (2-sided) Pearson Chi-Square 17.521" 2 .000 Likelihood Ratio 17.584 2 Linear-by-Linear Association 17.180 1 N of Valid Cases 1750 .000 .000 a. 0 cells (0.0%) have expected count less than 5. The minimum expected count is 64.37. Edit View Insert Format 12pt v Paragraph Tools Table BIU T² v
when a null hypothesis is false after using the one-way ANOVA, it indicates there is some overlap, but the researcher still does not know exactly which variable is overlapping and by how much. This can lead to a type I error. To avoid this, _____ will decrease the likelihood of error.
This is a basic statistic used in Meta-analysis and is used to measure meaningfulness of an outcome: Alpha level Effect size Power R-value
What is the critical value for an upper‐tailed hypothesis test of the population mean when the population variance is unknown in which a null hypothesis is tested at the 0.10 level of significance based on a sample size of 19? 1.645 1.328 1.734 1.740
Consider the ANOVA table shown here for a one-way analysis of variance for an experimental design in which there are four treatment levels: Source Between Error Total Df 29 SS 485.50 715.50 The observed F value is ____. MS F
Rather than a series of t-tests, analysis of variance is used because ...
Are freshmen psychology majors just as likely to change their major before they graduate compared to freshmen business majors? 366 of the 673 freshmen psychology majors from a recent study changed their major before they graduated and 394 of the 705 freshmen business majors changed their major before they graduated. What can be concluded at the a = 0.10 level of significance? For this study, we should use z-test for the difference between two population proportions a. The null and alternative hypotheses would be: Ho: p1 p2 v (please enter a decimal) H1: p1 p2 (Please enter a decimal) b. The test statistic z v -0.508 X (please show your answer to 3 decimal places.) c. The p-value = 0.6115 X (Please show your answer to 4 decimal places.) d. The p-value is > vV a e. Based on this, we should fail to reject the null hypothesis. f. Thus, the final conclusion is that ... O The results are statistically significant at a = 0.10, so there is sufficient evidence to conclude that the proportion of…

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