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Eighteen undergraduate students were randomly selected from a university and their systolic blood pressure was tested. The sample mean and standard deviation were 126.4 mmHg

Eighteen undergraduate students were randomly selected from a university and their systolic blood pressure was tested. The sample mean and standard deviation were 126.4 mmHg and 11.0 mmHg respectively. What is the obtained t-score for this sample under the null hypothesis Ho: ยต = 120?

-2.47

-2.01

2.01

2.47

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