1. A pediatric nurse is interested in understanding how the respiration rate for

ID: 3320551 • Letter: 1

Question

1. A pediatric nurse is interested in understanding how the respiration rate for newborn babies is affected by their surroundings while in the hospital. It is known that the average respiration of newborn babies, in general, is 45 breaths per minute and has a standard deviation of 15. The nurse is interested in comparing the respiration rate of babies who were kept with their mothers from birth, with those who were stayed in warming beds in the neonatal intensive care unit (NICU). She takes two samples of newborns in her department over a month's time. The average respiration for
newborns who had to stay in warming beds in the NICU (N = 25) was 50 breaths per minute with a standard deviation of 20. The average respiration for newborns who stayed in the same room as their mothers (N = 27) was 43 breaths per minute with a standard deviation of 10.
What is the estimated standard error of the mean respiration rate for the newborns who stayed in a
warming bed in the NICU?

A. 5.17

B.1.48

C.4.00

D.2.02

2. A representative sample:

is the same as a random sample.

b.has all the attributes in the same proportion as in the population.

c.is a subset of a random population.

d. comes from a representative population.

3. Amber collects data on health behaviors from a large community sample. If she wanted to identify

the middle 60% of scores, which z score would most closely mark that area?

a. ±3.45

b. ±0.60

c. ±0.84

d. ±0.26

4. Charlie and Patty participated in an experiment where they had to count backward in their head. The number of correct responses for Charlie, expressed as a z score, is 0.00. Patty scored at the 16th percentile. Which participant answered more questions correctly?

a.Charlie

b.Both participants performed below average.

Patty

d. Both participants performed equally well.

5. If Kristen reports her sample s = 4.73 and Roger reports his sample s = 6.71, whose set of scores would tend to fall farther away from the mean?

a.This cannot be determined without knowing the sample size.

b.Kristen's

c.Roger's

d.Both sets of data would have equal spread around the mean.

6. If a researcher has a sample of 100 doctors who worked in a war zone, which he wants to assess for PTSD symptoms and the standard deviation of the PTSD scale is 25, the standard error of the mean would be:

a.1.25

b.25

c. .25

d. 2.50

7. If a z score of 1.00 is selected from a set of scores with a M = 100.00 and s = 15.00, what is the

corresponding raw score?

a.100.00

b. 115.00

c. 125.00

d. 85.00