statistical test) was conducted to determine the effects of (name of the IV) on (name of the DV). There was (not) a significant effect of IV on DV, F(df between, df within) = ?, p < (or >) 0.05, R2 = ?. Follow up Tukey Post

statistical test) was conducted to determine the effects of (name of the IV) on (name of the DV). There was (not) a significant effect of IV on DV, F(df between, df within) = ?, p < (or >) 0.05, R2 = ?. Follow up Tukey Post

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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In a May 2011 study, Federal University Hospital in São Paulo, Brazil, 92 healthy pregnant women were separated into a control group and an experimental group. Those in the experimental group engaged in aerobic water exercise throughout their pregnancy whereas those women in the control group did not. After giving birth the neonatal outcome of the children of all women in the study was recorded where a negative neonatal outcome was defined as a hospital stay of more than four days. A set of similar results is shown in the table Group Positive Neonatal Outcome Negative Neonatal Outcome Water Exercise 22 19 Control Group 21 30 At a 5% level of significance, test the claim that the neonatal outcome was unrelated to the group in which they were assigned. (Water exercise or control group.) Calculate the test statistic as X squared.
In a May 2011 study, Federal University Hospital in São Paulo, Brazil, 71 healthy pregnant women were separated into a control group and an experimental group. Those in the experimental group engaged in aerobic water exercise throughout their pregnancy whereas those women in the control group did not. After giving birth the neonatal outcome of the children of all women in the study was recorded where a negative neonatal outcome was defined as a hospital stay of more than four days. A set of similar results is shown in the table Group Positive Neonatal Outcome Negative Neonatal Outcome Water Exercise 15 15 Control Group 12 18 A hypothesis test was carried out, yielding a p-value of 0.396. What is the correct interpretation? 1.Do not reject H0 since the p-value is greater than 0.05. 2. Reject H0 since the p-value is greater than 0.05. 3. Do not reject H0 since the p-value is less than 0.05. 4. Reject H0 since the p-value is less than 0.05. AND Based…
In a May 2011 study, Federal University Hospital in São Paulo, Brazil, 71 healthy pregnant women were separated into a control group and an experimental group. Those in the experimental group engaged in aerobic water exercise throughout their pregnancy whereas those women in the control group did not. After giving birth the neonatal outcome of the children of all women in the study was recorded where a negative neonatal outcome was defined as a hospital stay of more than four days. A set of similar results is shown in the table Group Positive Neonatal Outcome Negative Neonatal Outcome Water Exercise 19 17 Control Group 11 19 At a 5% level of significance, test the claim that the neonatal outcome was unrelated to the group in which they were assigned (Water exercise or control group). State the null and alternative hypothesis and identify the claim from the options below 1. H0: Neonatal outcome and group assignment are independent. HA: Neonatal…
Researchers are interested in the effectiveness of a new anti-retroviral medication at increasing 5 year survival for HIV infected persons with Hepatitis C. In order to test the efficacy of the new study drug, the researchers randomly assigned participants to receive either the new medication or a placebo. The following table summarizes preliminary results of the trial. Deceased Non-Deceased Total New Vaccine 55 84 139 Placebo 61 67 128 Total 116 151 267 A) Calculate the relative risk for mortality among those treated with the new vaccine versus the placebo. B) Interpret the relative risk measurement.
Baum and Gatchel (1981, Cognitive determinants of reaction to uncontrollable events: Development of reactance andlearned helplessness. Journal of Personality and Social Psychology, 40, 1078-1089) found that students living in longcorridordorms (housing 30 to 40 residents per corridor) had greater feelings of helplessness than those living in shortcorridordorms (housing less than 20 residents per corridor). A resident director at GSU wished to test this finding tolearn whether corridor length impacted students' sense of alienation. She randomly assigned 20 students to live in aresidence hall, with 10 students in long and 10 students in short corridors for the year. At the end of the year, each2/16/21 3student completed a measure of alienation. Below are her data—does corridor length affect feelings of alienation? Use an independent samples t-test to analyze these data. Corridor LengthAlienation Scores From 20 Different StudentsLong =19,15,14,15,15,9,16,15,17,13Short =11,…
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An experiment to determine if a migraine medication decreases a person's average number of monthly migraines is performed on 400 people who report they have several migraines a month. Researchers randomly assigned 200 people to the treatment group and 200 people to the control group. After the study, the researchers determined that 48 of the subjects in the treatment group and 28 of the subjects in the control group average fewer migraines per month. The data from the two groups are resampled 150 times, and the table shows the distribution of the differences of the proportions for the reconfigured treatment and control groups.
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A hospital conducted a study of the waiting time in its emergency room. The hospital has a main campus and three satellite locations. Management had a business objective of reducing waiting time for emergency room cases that did not require immediate attention. To study this, a random sample of 15 emergency room cases that did not require immediate attention at each location was selected on a particular day, and the waiting times (measured from check into when the patient was called into the clinic area) were collected and stored in the table. At the 0.05 level of significance, is there evidence of a difference in the mean waiting times in the four locations? Main Satellite 1 Satellite 2 Satellite 3 120.08 30.75 75.86 54.05 81.90 61.83 37.88 38.82 78.79 26.40 68.73 36.85 63.83 53.84 51.08 32.83 79.77 72.30 50.21 52.94 47.94 53.09 58.47 34.13 79.88 27.67 86.29 69.37 48.63 52.46 62.90 78.52 55.43 10.64 44.84 55.95 64.06 53.50 64.17 49.61 64.99 37.28 50.68…
A study investigated the joint effects of sleep quality and sleep duration on the development of coronary heart disease (CHD). A total of 60,586 individuals aged 40 and older with no current or prior history of CHD were enrolled into the study. A self-administered questionnaire was used to collect information on sleep quality and duration at the start of the study, and 43,910 participants reported getting ³6 hours of sleep per day. Participants were followed for approximately 12 years, for a total of 152,000 person-years among those getting <6 hours sleep/day and 527,000 person-years among those getting ³6 hours sleep/day. Out of 2,740 participants who developed CHD throughout follow-up, 721 participants reported getting <6 hours of sleep per day at baseline. Question 10: What is the incidence rate of coronary heart disease among all participants in the study?
A survey across generations of workers gathered data on engagement at work. The results for a sample of 1,000 workers are in the accompanying contingency table. At the 0.10level of significance, is there evidence of a significant relationship between generation and level of engagement in the workplace? Contingency Table GENERATION LEVEL OF ENGAGEMENT Millennials Gen Xers Baby Boomers Traditionalists Total Engaged 96 110 94 12 312 Not Engaged 199 176 130 10 515 Actively Disengaged 53 59 54 7 173 Total Question content area bottom Part 1 What are the null and alternative hypotheses to test? H0: No relationship exists between generation and level of engagement. H1: A relationship exists between generation and level of engagement. Part 2…
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