Card 16 / 180: On the most recent business-statistics exam, the instructor tallied a wide range of scores for the students in the course. Based on the following sample of test scores, 10, 23, 37, 41, 55, 69, 73, 89, which of the following values would result in a test score one standard deviation below the mean? Round your answer to the nearest tenth.
A) -3.9
B) 22.9
C) 26.7
D) 49.6

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