Question

part 3

Beryllur Beryllum is an extremely lightweight metal that is used in many Industries, such as Ace and electronic long-temposure to beryllium can cause people to become send Once an Individus sensited, continued exposure can result in chronkberylum disease, which are carring of the lungs. In a study of the effects of sposure to bervillum, workers were categorted by their duration of exposure ( years) and by their d e sta (disessed. seedeed. normal). The results were as follows: <1 1 > 5 10 210 Test the hypothesis of independence. Use the q=0.01 level of significance and the P-value method with the TI-84 Plus Calculator What do you conclude? (a) State the null and alternate hypotheses. H, Beryllium exposure and disease status are Independent H: Beryllium exposure and disease status are not Indepen Inoependent Part 2 of 4 (b) Find the P value. Round your answer to at least four decimal place The P-value is 0.0078 Part: 2/4 Part 3 of (C) Determine whether to reject - Choose ane) the null hypothesis

Answer 1

as the p-value is 0.0078 < alpha = 0.01, we reject H0,

that implies that at alpha = 0.01 level of significance we have enough evidence to claim that Beryillum exposure and disease status are not independent.