# Project #47209 - Science and Research for Advanced Nursing Practice Homework #2

Homework #2 (20 points)

1.      The following correlation matrix represents relationships among variables within the nursing work environment in a hypothetical study. These fictitious data were obtained from registered nurses working in different hospitals and on different units. For each variable a higher score indicates more of the attribute

 Variables 1 2 3 4 5 6 7 Accountability 1 Autonomy 0.44 1.0 Resources 0.59 -.67 1.0 Shared governance 0.61 .62 .53 1.0 Image of Nursing 0.35 .59 .44 .61 1.0 Turn over -0.18 -.10 -.26 -.18 -.32 1.0 Retention 0.45 .36 .25 .48 .53 -.35 1.0

n=890

1. (2 points) What is the value of the Pearson r for the relationship between “accountability” and “turnover”? Interpret the value in words.

1. (1 point) Which variable has the strongest relationship with “Accountability”?

1. (1 point) What two variables have the strongest relationship in this matrix ?

1. (1 point) The Pearson r for the relationship between “shared governance ” and “turn over” indicates that those  who have  more turn over  tend to have less shared governance or more shared governance  (circle one answer)

1. (1 point) The Pearson r of -.26  for the relationship between “resources” and “turn over” proves that having less resources causes more turn over.

False or True (circle one)

2.      (1 point each) For each of the following indicate if a correct decision was made, a Type 1 or Type II error.

____ Accepting the null hypothesis when the research hypothesis is true.

____  Rejecting the null hypothesis when the research hypothesis is false.

____     Rejecting the null hypothesis when the research hypothesis is true.

3.      A random sample of 200 nurses from a university hospital was administered a scale to measure job satisfaction. The possible scores ranged from 0 to 80. Scores for the sample were approximately normal in distribution with a mean of 55 and standard deviation of 5.

(2 points) Between what two scores are approximately 95% of the nurses expected to fall ?

(2 points) What is the standard error of the mean estimated from this sample?

4.      (1 point) If a researcher calculates a test statistic to be 2.2, and the critical value is 2.0, the researcher would make which of the following decisions?

1. accept the null hypothesis
2. reject the null hypothesis

5.      A t-test was used to determine if there was a significant difference in mean scores of male and female nursing student perceptions of the image of nursing.  Perceptions of the image of nursing were measured using 20 items on a 5 point Likert-type scale.

 Perception of the Image of Nursing scores – t-Test results N Mean Std Dev T df p Males 154 34.02 4.91 1.62 434 0.105 Females 225 33.17 5.71

Levene’s Test = .058

a. (1 point) Is this test an independent or dependent t-test? Explain.

b. (2 points) Is the assumption for the Levene’s test met? Why or why not? Provide statistical

evidence

c. (1 point) How many total subjects are in the sample?

d. (1 point) What is the possible range of scores for perception of the image of nursing?

e. (1 point) What conclusion can be made based on the results?

1. There is a significant difference in mean perception of the image of nursing scores between male and female nursing students.

2.  There is not a significant difference in mean perception of the image of nursing scores between male and female nursing students.

3. Male nursing students reported a statistically significant higher perception of the image of nursing scores score as compared to female nursing students.

4. Female nursing students  reported a statistically significant lower perception of the image of nursing scores score as compared to male nursing students.

 Subject General Due By (Pacific Time) 11/14/2014 10:00 am
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