Question

It takes an average of 8.7 minutes for blood to begin clotting after an injury. An EMT wants to see if the average will increase if the patient is immediately told the truth about the injury. The EMT randomly selected 61 injured patients to immediately tell the truth about the injury and noticed that they averaged 8.8 minutes for their blood to begin clotting after their injury. Their standard deviation was 2.97 minutes. What can be concluded at the the a = 0.10 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: HO: Select an answer H: р Select an answer V 0 C. The test statistic (please show your answer to 3 decimal places.) (Please show your answer to 4 decimal places.) d. The p-value = e. The p-value is a f. Based on this, we should fail to reject the null hypothesis.

Answer 1

Given n=61 18.7 2 = 8.8 02.97 0) a) for this study we should use we should use t test (normal) 6) C) te 88-87 0.263 Hoi 11=8.7 H, o li807 nu 2.97ING 2,97/561 d) P-vale e df = n-1-6-1-60 using El cel -T.DIST.RT 6.263,60) = 0.3967 P7 x = 0 Fail prake=P[ 20 263 60 to reiect Ho