Claim The mean systolic blood presoure of all healthy adults is less than than 121 mm Hg Sample data For 275 healthy adults, the mean systolic blood pressure level is 120 82 mm Hg and the standard devlation is 14.94 mm Hg The nul and alternative hypotheses are Ha -121 and H, p 121 Find the value of the test statistic The value of the test statisic is (Round to two decimal places as needed)

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