Question

4. A blood sample is analyzed by three labs to test the null hypothesis that the blood matches that of a suspect. The resulting p-values from the labs are 0.60, 0.25, and 0.01, respectively. (a) If the lab test results are independent, can you reject the null hypothesis at the significance level 0.05? (b) If the three test results are positively correlated, would you reach the same conclusion? Why?

Answer 1

Anso we use pvalues to make conclusions in significance testing. More specifically, we compare the pevalue. to à significance level of to make Conclusion about own hypothesis. If P value is lower than the signifia Cance level (2) we chose, we have reject the null bypother sis to and if pvalue is grater than or lowal to the Significance level (& then we fail to reject the null hypothesis Ho, this doesn't mean we accept Ho. Hene, 1st wawe of p=0.60 >0.05=d. and value of p=0.25 > 0.052d, 3rd valbe of P=0.01 <0.05=d. et labs test result be independent then 1st two labs a have a chance 60% and 25% to made blood of a suspect the last one have to nejeet the mull hypothesie. - pesut are positivly correlated then we can conclude to nejeet the null hypothesis as the last one is make the rejection of tto. match that a suspeger at (6) If the the last resulte