# Nursing Statistics Using STATA

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I need some homework done and a quiz, its 17 question in the homework and 20 questions in the quiz. It's a nursing class NURS 629. I need this by tomorrow at 6:00 pm eastern

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NURS 629 Homework 3
One Sample t-test, T-test for Independent Samples, and Power and Sample Size
Answer the following questions. Submit your answers for Assignment 3 under the Quizzes tab in D2L.
Question 1. The following variable is contained in the Munro data set: Total Inventory of Personal Attitudes (total). What is the mean and standard deviation for this variable? [sum total].
Question 2. Run a histogram for total, what is the distribution for total? [histogram total].
Question 3. Run a boxplot for total, what does the boxplot look like?
Question 4. What can you say about the boxplot distribution for total?
Question 5. Researchers would like to test the hypothesis that the Total Inventory of Personal Attitudes (IPA) mean score (total) for the students’ sample differs from the general population’s mean score of 150. Write the null and alternative hypotheses in words and equation format.
Question 6. Compute a one-sample t test to test the hypothesis that the Total Inventory of Personal Attitudes mean score (total) for the students’ sample differs from the general population’s mean score of 150, [ttest total=150]. What is the t statistic result of this test?
Question 7. What is the p-value and is the p-value significant or not?
Question 8. What can you conclude about this test?
Question 9. The following variable is contained in the Munro data set: Satisfaction with current weight (satcurwt). What is the mean and standard deviation for this variable? [sum satcurwt].
Question 10. The following variable is contained in the Munro data set: Gender (gender). What percent of participants are male and what percent are female? [tab gender].
Question 11. Assuming approximately normal distribution, perform a t test for independent samples (unpaired t-test) to answer the question on whether students’ satisfaction with current weight (satcurwt) differs significantly between males and females. State the null and alternative hypotheses in word and equation format.
Question 12. Assuming approximately normal distribution, perform a t test for independent samples (unpaired t-test) to answer the question on whether students’ satisfaction with current weight (satcurwt) differs significantly between males and females [ttest satcurwt, by(gender)]. What is the t statistic result of this test?
Question 13. What is the p-value and is the p-value significant or not?
Question 14. What can you conclude about this test?
Question 15. Based on the results of the t test, can the null hypothesis be rejected in favor of the alternative hypothesis?
Question 16. A neuroscience laboratory run by a friend of mine studied avoidance behavior in rabbits for many years and published numerous papers on the topic. It is clear from this research that, for animals that have not received any experimental treatment, the mean response latency on a particular task is 5.8 seconds with a standard deviation of 2 seconds (based on a very large number of rabbits). Now another investigator wants to create lesions in certain areas of the amygdala and demonstrate poorer avoidance conditioning in those animals. The amygdala is associated with emotion, and if you reduce an emotional response, you would be expected to reduce avoidance behavior. She expects latencies to decrease by about one second (i.e., rabbits will repeat the punished response sooner, mean2 = 4.8 seconds), and she plans to run a one-sample t test (with H0: µ0 = 5.8). How many subjects does she need to have at least a 50:50 chance of success? [sampsi 4.8 5.8, sd(2)power(.5) onesamp].
Question 17. How many subjects does she need in order to have at least an 80:20 chance of success? [sampsi 4.8 5.8, sd(2)power(.8) onesamp].
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