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O Student'st chi-square O normal O uniform What are the degrees of freedom? (c) Find or estimate the P-value of the sample test statistic.

O Student'st chi-square O normal O uniform What are the degrees of freedom? (c) Find or estimate the P-value of the sample test statistic.

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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ipling distribution will you use? binomial Student's t O chi-square O normal O uniform What are the degrees of freedom? (c) Find or estimate the P-value of the sample test statistic. O P-value > 0.100 0.050 < P-value < 0.100 O 0.025 < P-value < 0.050 O 0.010 < P-value < 0.025 O 0.005 < P-value < 0:010 O 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. Since the P-value > a, we reject the null hypothesis. O Since the P-value < a, we reject the null hypothesis. O Since the P-value s a, we fail to reject the null hypothesis. (e) Interpret your conclusion in the context of the application. At the 5% level of significance, there is sufficient evidence to conclude that age of young adult and movie preference are not independent. At the 5% level of significance, there is insufficient evidence to conclude that age of young adult and movie preference are not independent.
Transcribed Image Text:ipling distribution will you use? binomial Student's t O chi-square O normal O uniform What are the degrees of freedom? (c) Find or estimate the P-value of the sample test statistic. O P-value > 0.100 0.050 < P-value < 0.100 O 0.025 < P-value < 0.050 O 0.010 < P-value < 0.025 O 0.005 < P-value < 0:010 O 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. Since the P-value > a, we reject the null hypothesis. O Since the P-value < a, we reject the null hypothesis. O Since the P-value s a, we fail to reject the null hypothesis. (e) Interpret your conclusion in the context of the application. At the 5% level of significance, there is sufficient evidence to conclude that age of young adult and movie preference are not independent. At the 5% level of significance, there is insufficient evidence to conclude that age of young adult and movie preference are not independent.
Mr. Acosta, a sociologist, is doing a study to see if there is a relationship between the age of a young adult (18 to 35 years old) and the type of movie preferred. A random sample of 93 adults revealed the following data. Test whe age and type of movie preferred are independent at the 0.05 level. Person's Age 24-29 yr Movie 18-23 yr 30-35 yг Row Total Drama 7 12 15 34 Science Fiction 13 8. 30 8 13 29 Comedy Column Total 8 28 28 37 93 n USE SALT (a) What is the level of significance? 0.05 State the null and alternate hypotheses. O Ho: Age and movie preference are not independent. H,: Age and movie preference are not independent. Ho: Age and movie preference are independent. H,: Age and movie preference are not independent. O Ho: Age and movie preference are not independent. H,: Age and movie preference are independent. O Ho: Age and movie preference are independent. H,: Age and movie preference are 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? Yes O No What sampling distribution will you use? O binomial Student's t O chi-square O normal O uniform MacBook Pro
Transcribed Image Text:Mr. Acosta, a sociologist, is doing a study to see if there is a relationship between the age of a young adult (18 to 35 years old) and the type of movie preferred. A random sample of 93 adults revealed the following data. Test whe age and type of movie preferred are independent at the 0.05 level. Person's Age 24-29 yr Movie 18-23 yr 30-35 yг Row Total Drama 7 12 15 34 Science Fiction 13 8. 30 8 13 29 Comedy Column Total 8 28 28 37 93 n USE SALT (a) What is the level of significance? 0.05 State the null and alternate hypotheses. O Ho: Age and movie preference are not independent. H,: Age and movie preference are not independent. Ho: Age and movie preference are independent. H,: Age and movie preference are not independent. O Ho: Age and movie preference are not independent. H,: Age and movie preference are independent. O Ho: Age and movie preference are independent. H,: Age and movie preference are 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? Yes O No What sampling distribution will you use? O binomial Student's t O chi-square O normal O uniform MacBook Pro
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