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MATLAB: An Introduction with Applications
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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O Student'st O normal O uniform chi-square What are the degrees of freedom? (c) Find or estimate the P-value of the sample test statistic. p-value > 0.100 0.050< p-value < 0.100 0.025< p-value < 0.050 0.010 < p-value < 0.025 0.005 < p-value < 0.010 p-value < 0.005 (d) Based on your answers in parts (a) to (c), will you reject or fail to reject the null hypothesis of independence? O Since the P-value > a, we fail to reject the null hypothesis. O Since the P-value > a, we reject the null hypothesis. Since the P-value < a, we reject the null hypothesis. O Since the P-value < a, we fail to reject the null hypothesis. (e) Interpret your conclusion in the context of the application. O At the 1% level of significance, there is insufficient evidence to conclude that Myers-Briggs preference and the profession are not independe At the 1% level of significance, there is sufficient evidence to conclude that Myers-Briggs preference and the profession are not independent
Transcribed Image Text:O Student'st O normal O uniform chi-square What are the degrees of freedom? (c) Find or estimate the P-value of the sample test statistic. p-value > 0.100 0.050< p-value < 0.100 0.025< p-value < 0.050 0.010 < p-value < 0.025 0.005 < p-value < 0.010 p-value < 0.005 (d) Based on your answers in parts (a) to (c), will you reject or fail to reject the null hypothesis of independence? O Since the P-value > a, we fail to reject the null hypothesis. O Since the P-value > a, we reject the null hypothesis. Since the P-value < a, we reject the null hypothesis. O Since the P-value < a, we fail to reject the null hypothesis. (e) Interpret your conclusion in the context of the application. O At the 1% level of significance, there is insufficient evidence to conclude that Myers-Briggs preference and the profession are not independe At the 1% level of significance, there is sufficient evidence to conclude that Myers-Briggs preference and the profession are not independent
The following table shows the Myers-Briggs personality preferences for a random sample of 519 people in the listed professions. T refers to thinking and F refers to feeling. Personality Type Row Total Occupation Clergy (all denominations) M.D. T 56 92 148 73 86 159 119 93 212 Lawyer Column Total 248 271 519 n USE SALT Use the chi-square test to determine if the listed occupations and personality preferences are independent at the 0.01 level of significance. (a) What is the level of significance? 0.01 State the null and alternate hypotheses. OHo: Myers-Briggs preference and profession are independent. H,: Myers-Briggs preference and profession are not independent. O Ho: Myers-Briggs preference and profession are independent. H: Myers-Briggs preference and profession are independent. O Ho: Myers-Briggs preference and profession are not independent. H,: Myers-Briggs preference and profession are independent. O Ho: Myers-Briggs preference and profession are not independent. H,: Myers-Briggs preference and profession are not independent. (b) Find the value of the chi-square statistic for the sample. (Round the expected frequencies to at least three decimal places. Round the test statistic to three decimal places.) Are all the expected frequencies greater than 5? O Yes O No What sampling distribution will you use? O binomial O Student'st O normal O uniform MacBook Pro
Transcribed Image Text:The following table shows the Myers-Briggs personality preferences for a random sample of 519 people in the listed professions. T refers to thinking and F refers to feeling. Personality Type Row Total Occupation Clergy (all denominations) M.D. T 56 92 148 73 86 159 119 93 212 Lawyer Column Total 248 271 519 n USE SALT Use the chi-square test to determine if the listed occupations and personality preferences are independent at the 0.01 level of significance. (a) What is the level of significance? 0.01 State the null and alternate hypotheses. OHo: Myers-Briggs preference and profession are independent. H,: Myers-Briggs preference and profession are not independent. O Ho: Myers-Briggs preference and profession are independent. H: Myers-Briggs preference and profession are independent. O Ho: Myers-Briggs preference and profession are not independent. H,: Myers-Briggs preference and profession are independent. O Ho: Myers-Briggs preference and profession are not independent. H,: Myers-Briggs preference and profession are not independent. (b) Find the value of the chi-square statistic for the sample. (Round the expected frequencies to at least three decimal places. Round the test statistic to three decimal places.) Are all the expected frequencies greater than 5? O Yes O No What sampling distribution will you use? O binomial O Student'st O normal O uniform MacBook Pro
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