A random sample of 20 U.S. adults finds they have an average height of 170.12 cm with sample standard deviation 9.8 cm. Find the TS,p-value, and decision for testing whether the average height of an American adult differs from 175 cm using a 0.05 level of significance.
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TS = –2.23;p-value = 0.0380; fail to rejectH0
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TS = –2.23;p-value = 0.0190; rejectH0
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TS = 2.23;p-value = 0.0380; rejectH0
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TS = –2.23;p-value = 0.0380; rejectH0