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What is the obtained t-score

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Sixteen undergraduate students were randomly selected from a university and their systolic blood pressure was tested. The sample mean and standard deviation were 114.6 mmHg and 10.8 mmHg respectively. Supposing that you are asked to test hypotheses Ho: µ = 120 versus H1: µ < 120.

a. What is the obtained t-score, the value of the test statistic obtained from the sample, under the null hypothesis?

b. What is the number of degrees of freedom of the obtained t-statistic?

c. What would be the decision rule if the level of significance is .05?

Reference no: EM131720232

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