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Two scientific articles report results from experiments measuring reaction time (in milliseconds).Article A reports a mean reaction time of 520 ms with a variance of 400.Article B reports a mean reaction time of 520 ms with a standard deviation of 20 ms.As a reminder, variance is used to approximate how far values are from the average by squaring the differences, so values above and below the average (i.e., positive and negative) do not cancel out. Standard deviation describes how far a typical value differs from the average using the same units as the original data.Which statement best explains what is happening?

 In a normal distribution, approximately what percentage of data falls within one standard deviation of the mean?

Two random samples are drawn from the same population, and their sample means differ slightly. This difference is best explained by:

Which situation would most likely have the smallest standard deviation?

Please click here to access the Sample Quiz.

A client develops recurrent variable decelerations.Place the nursing interventions in priority order:1. Reposition client2. Administer oxygen3. Discontinue oxytocin4. Perform vaginal examWhat is the correct sequence?

A client in active labor is receiving oxytocin. The fetal tracing shows:• Baseline: 155 bpm• Minimal variability• Recurrent gradual decelerations• Decelerations begin after the contraction starts• Nadir occurs after the peak of the contraction• Contractions every 1–1.5 minutesWhat is the most accurate interpretation?

Which findings indicate an adequate contraction pattern during active labor?(Select all that apply.)

A nurse is monitoring a client with persistent occiput posterior position. Which complications should the nurse anticipate? (Select all that apply.)

A client is 9 cm dilated and experiencing early decelerations with each contraction. Variability is moderate. Baseline is 135 bpm. What is the nurse’s priority action?