Mann-Whitney U Test the Mean Data Analysis Chapter

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They hypothesis is rejected. The Chi-Square was significant X2 (1, 84) = 4.403, p < .05. The proportion of females alive at discharge was much greater than the proportion of males alive at discharge. This can be seen in the barchart below.

alive discharge * gender Crosstabulation

gender

Total

male female alive discharge no

Count

7

5

12

Expected Count 3.9

8.1

12.

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0

yes

Count

20

52

72

Expected Count

23.1

48.9

72.0

Total

Count

27

57

84

Expected Count

27.0

57.0

84.0

4) Correlation & Regression

Variables: Hours in Operating Room & Number of Preop Risk Factors

Scatter Plot:

Hypothesis: The population correlation coefficient is equal to 0.

The hypothesis fails to be rejected. The correlation coefficient is not significant (p......

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