Question

Suppose the incidence rate of myocardial infarction (MI) per year was 5 per 1000 among 45- to 54-year old men in 2005. To look at changes in incidence over time, a random sample of 5000 45- to 54-year old men were followed for 1 year starting in 2015. Fifteen new cases of MI were found. The question is, how compatible is the sample rate of 0.3% with the population rate of .5%? A. Assess the statistical significance of this data using the critical value method. STEP 1: STATE THE APPROPRIATE NULL AND ALTERNATIVE HYPOTHESES STEP 2: DEFINE THE CRITICAL REGION STEP 3: COMPUTE THE APPROPRIATE TEST STATISTIC STEP 4: STATE YOUR STATISTICAL DECISION STEP 5: STATE YOUR PRACTICAL CONCLUSION STEP 6: REPORT THE P-VALUE B. Construct and practically interpret a 95% CI for the true incidence rate of MI in this group. C. What type of complementary information is provided by the hypothesis test and confidence interval in this case?

Answer 1