A Researcher Records the Time (In Seconds)it Takes a Sample

question 56

Multiple Choice

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?

• A) 48 s
• B) 50 s
• C) 6.9 s
• D) 7.1 s

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Definitions:

Childcare Cost

The expense associated with providing care for children, especially in a daycare, nursery, or by a nanny.

Variance

The determination of the variability within a dataset, found by averaging the squares of the differences from the mean value.

P-value

The likelihood of getting test outcomes that are at least as significant as those seen in the test, under the assumption that the null hypothesis holds correct.

Z

In statistics, typically refers to a standard score indicating how many standard deviations an element is from the mean.