BST 322 (BST 322)

Critical care nurses wanted to evaluate the effect of heparin vs saline IV flush solution on IV patency (patent vs not patent). Which test is most appropriate? • Question 2 An entire set of individuals or objects having some common characteristics is: • Question 3 1 out of 1 points 1 out of 1 points Positive relationships between two variables indicate that, as the score of one increases, the score of the other increases. • Question 4 Parametric te...

• Question 1 1 out of 1 points The assumptions for ANCOVA differ substantially from those for ANOVA. Selected Answer: Correct Answer: Fals e Fals e • Question 2 A nurse researcher wanted to evaluate blood pressure in a set of 1 out of 1 points patients/research subjects at 1, 3, and 6 months. What test would be most appropriate? Selected Answer: RM-ANOVA Correct Answer: RM-ANOVA • Question 3 1 out of 1 points A variable with equal dis...

Question 1 1 out of 1 points Parametric tests can be used with any type of data. Correct Answer: False Question 2 1 out of 1 points Bivariate statistics refers to the statistical analysis of the relationship between two variables. Correct Answer: True Question 3 1 out of 1 points Correlation coefficients, r, range from -1.00 to +1.00. Correct Answer: True Question 4 1 out of 1 points Data which uses number values, has an equal distance between values, and has a possible absolute...

Question 1 1 out of 1 points This is used when a conservative approach is desired and an expected cell frequency is less than 5 in a 2X2 table. Selected Answer: Fisher's exact test Answers: Fisher's exact test Cramer's V Yates' correction Regression  Question 2 1 out of 1 points When examining the relationship between a nominal variable and an interval or ratio variable, you would create a table using the nominal variables, calculate the mode and median of the interval o...

Question 1 1 out of 1 points This is used when a conservative approach is desired and an expected cell frequency is less than 5 in a 2X2 table. Selected Answer: Fisher's exact test Answers: Fisher's exact test Cramer's V Yates' correction Regression  Question 2 1 out of 1 points When examining the relationship between a nominal variable and an interval or ratio variable, you would create a table using the nominal variables, calculate the mode and median of the interval o...

QUESTIONS AND ANSWERS

9. Write a paragraph summarizing the results of the analysis in Exercise 8. What can you conclude about smoking and depression (“Feeling Down”) in this sample? The Chi-square value of 6.31 is statistically significant because it is greater than its critical value of 5.99. In addition, the p-value is less than 0.05, therefore we can reject the null hypothesis that smokers/non-smokers are independent of the depression frequency. It appears that smoking affects depression frequency. 10. Be...

5. (1 pt) Write a few sentences that could be used to report the results obtained for the t-test in Exercise 4. We are unable to reject the null hypothesis (H0: μ = 45) because the p-value 0.1371 is greater than .05 makes it non-significant. The tabled value 2.12 for a two-tailed test is greater than the t-statistic 1.565. This means we cannot accept the alternative hypothesis that the drug alters heart rate. (HA : μ ≠ 45) 6. (2 pts) A study by the Fellows Research Group evaluated the ...

7. (1 pt) Using the information provided, indicate which statistical test you think should be used for each of the following situations (a-d): y. a. Independent variable: normal birth weight vs. low birth weight infants; dependent variable: breathing rate (in breaths per minute). 2-T-Test b. Independent variable: time of measurement of same patient (before, and after surgery); dependent variable: heart rate. One sample T-test c. Independent variable: time of measurement (before, during, a...