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A researcher records the time (in seconds) it takes a sample of participants to walk alone through a dark portion of campus. The researcher computes

A researcher records the time (in seconds) it takes a sample of participants to walk alone through a dark portion of campus. The researcher computes SS = 1,200. Assuming that a sample of 25 participants was observed in this study, what is the standard deviation for these data? Show your work!

a.48 s

b.50 s

c.6.9 s

d.7.1 s

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