It takes an average of 13.3 minutes for blood to begin clotting after an injury. An EMT wants to see if the average will decline if the patient is immediately told the truth about the injury. The EMT randomly selected 51 injured patients to immediately tell the truth about the injury and noticed that they averaged 13.1 minutes for their blood to begin clotting after their injury. Their standard deviation was 4.73 minutes. What can be concluded at the the a = 0.10 level of significance? a. For this study, we should use t-test for a population mean b. The null and alternative hypotheses would be: Ho: ?v Select an answerv Hj: ?v| Select an answer♥ c. The test statistic ?♥ = (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.)

Question

Please answer B, C,  & D. 

It takes an average of 13.3 minutes for blood to begin clotting after an injury. An EMT wants to see if the
average will decline if the patient is immediately told the truth about the injury. The EMT randomly
selected 51 injured patients to immediately tell the truth about the injury and noticed that they averaged
13.1 minutes for their blood to begin clotting after their injury. Their standard deviation was 4.73 minutes.
What can be concluded at the the a = 0.10 level of significance?
a. For this study, we should use t-test for a population mean
b. The null and alternative hypotheses would be:
Ho: ?v Select an answerv
Hj: ?v| Select an answer♥
c. The test statistic ?♥ =
(please show your answer to 3 decimal places.)
d. The p-value =
(Please show your answer to 4 decimal places.)
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Transcribed Image Text

It takes an average of 13.3 minutes for blood to begin clotting after an injury. An EMT wants to see if the average will decline if the patient is immediately told the truth about the injury. The EMT randomly selected 51 injured patients to immediately tell the truth about the injury and noticed that they averaged 13.1 minutes for their blood to begin clotting after their injury. Their standard deviation was 4.73 minutes. What can be concluded at the the a = 0.10 level of significance? a. For this study, we should use t-test for a population mean b. The null and alternative hypotheses would be: Ho: ?v Select an answerv Hj: ?v| Select an answer♥ c. The test statistic ?♥ = (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.)

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