(a) State the appropriate null and alternate hypotheses.(b) Compute the P- value.(c) Determine whether to reject H0(d)State a conclusion A recent study examined the effects of carbon monoxide exposure on a group of construction workers. The following table presents the numbers of workers whoreported various symptoms, along with the shift (morning, evening, or night) that they worked.Morning ShiftNight ShiftEvening Shift19141525225181149InfluenzaHeadacheWeaknessShortness of BreathSend data to ExcelTest the hypothesis of independence. Use the a= 0.01 level of significance and the P-value method with the TI-84 Plus calculator. What do you conclude?Part: 0 / 4Part 1 of 4State the null and alternate hypotheses.Ho: The shift and reported symptoms (Choose one)H₁: The shift and reported symptoms (Choose one)This hypothesis test is a (Choose one) ▼ test.610independent.independent.X

Hypothesis : H0 : The shift and reported symptoms are independent H1 : The shift and reported symptoms are not independent This hypothesis test is right tailed test. We have to perform chi-square test of independent. We have to use TI-84 Press 2ND ---> X-1 ---> Edit ---> Enter Enter given data in 4 x 3 matrix. Now press 'STAT'----> TESTS ----> Scroll down up to "χ2-Test" Now hit enter , you will see following screen Highlight 'Calculate' and hit enter. Output : We got , chi-square test statistics = 17.43211086 P-value = 0.0078Decision about null hypothesis : Decision rule : 1) Reject null hypothesis (H0) if p-value less than significance level (α ) 2) Otherwise fail to reject null hypothesis (H0) Given significance level = α = 0.01 It is observed that p-value (0.0078) is less than α = 0.01 So, reject the null hypothesis (H0) Conclusion : There is not sufficient evidence to conclude that the shift and reported symptoms are independent

Math

Statistics

A recent study examined the effects of carbon monoxide exposure on a group of construction workers. The following table presents the numbers of workers who reported various symptoms, along with the shift (morning, evening, or night) that they worked. Morning Shift Night Shift Evening Shift 19 14 15 25 22 5 11 6 9 10 Influenza Headache Weakness Shortness of Breath Send data to Excel Test the hypothesis of independence. Use the a= 0.01 level of significance and the P-value method with the TI-84 Plus calculator. What do you conclude? Part: 0 / 4 18 4 Part 1 of 4 State the null and alternate hypotheses. Ho: The shift and reported symptoms (Choose one) H₁: The shift and reported symptoms (Choose one) This hypothesis test is a (Choose one) ▼ test. independent. independent.

A recent study examined the effects of carbon monoxide exposure on a group of construction workers. The following table presents the numbers of workers who reported various symptoms, along with the shift (morning, evening, or night) that they worked. Morning Shift Night Shift Evening Shift 19 14 15 25 22 5 11 6 9 10 Influenza Headache Weakness Shortness of Breath Send data to Excel Test the hypothesis of independence. Use the a= 0.01 level of significance and the P-value method with the TI-84 Plus calculator. What do you conclude? Part: 0 / 4 18 4 Part 1 of 4 State the null and alternate hypotheses. Ho: The shift and reported symptoms (Choose one) H₁: The shift and reported symptoms (Choose one) This hypothesis test is a (Choose one) ▼ test. independent. independent.

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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Test the null hypothesis of independence of the two classifications A and B of the accompanying contingency table. Use α = 0.05. Click the icon to view the table. Specify the null and alternative hypotheses. Choose the correct answer below. A. Ho: The row and column classifications are dependent H₂: The row and column classifications are independent B. Ho: The row and column classifications are independent H₂: The row and column classifications are dependent OC. Ho: The classifications A₁ and B₁ are independent H₂: The classifications A₁ and B₁ are dependent Find the test statistic. x² (Round to the nearest hundredth as needed.) Specify the rejection region. Choose the correct answer below. O A. x² >9.48773 O B. x² > 15.5073 O C. x² O D. x² >3.84146 > 16.9190 State the conclusion. Choose the correct answer below. Data table wwwwwww A A₁ A₂ A3 O A. Reject Ho, there is insufficient evidence to indicate the row and column classification are dependent at x = 0.05. Print B₁₁ 41 63 31 B B₂…
The mean SAT Score in mathematics is 523. The standard deviation of these scores is 39. A special preparation course claims that the mean SAT score, u, of its graduates is greater than 523. An independent researcher tests this by taking a random sample of 33 students who completed the course; the mean SAT score in mathematics for the sample was 541. Assume that the population is normally distributed. At the 0.01 level of significance, can we conclude that the population mean SAT score for graduates of the course is greater than 523? Assume that the population standard deviation of the scores of course graduates is also 39. Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places, and round your responses as specified below. (If necessary, consult a list of formulas.) (a) State the null hypothesis H, and the alternative hypothesis H,. H, : H : (b) Determine the type of test statistic to use. D=D OSO (Choose one) (c)…
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Let’s assume the average income for all majors in the School of Engineering is $80,000. However, the chair of the Computer Science department thinks their students earn more than that. Please choose the appropriate null and alternative hypotheses if the chair wanted to test this belief. a. H0: u <=80,000 Ha: u > 80,000 b. H0: u= 80000 Ha: u not= 80000 c. H0: u >80000 Ha: u < 80000 d. H0: u >80000 Ha: < 80000 e. None of the above.
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