A randomly sampled group of patients at a major U.S. regional hospital became part of a nutrition study on dietary habits. Part of the study consisted of a 50-question survey asking about types of foods consumed. Each question was scored on a scale from one: most unhealthy behavior, to five: most healthy behavior. The answers were summed and averaged. The population of interest is the patients at the regional hospital. A prior survey of patients had found the mean score for the population of patients to be μ= 2.9. After careful review of these data, the hospital nutritionist decided that patients could benefit from nutrition education. The current survey was implemented after patients were subjected to this education, and it produced these sample statistics for the 15 patients sampled: x = 3.3 and s = 1.2. We would like to know if the education improved nutrition behavior. The hypotheses to be tested are: Ho μ=2.9 vs. Ha: x = 3.3. Ho μ=2.9 vs. Ha μ> 2.9. Ho μ=3.3 vs. Ha µ< 2.9. Ho μ=2.9 vs. Ha μ> 3.3. 10:39 PM

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 3E
Question
A randomly sampled group of patients at a major U.S. regional hospital became part of a nutrition study on dietary habits. Part
of the study consisted of a 50-question survey asking about types of foods consumed. Each question was scored on a scale from
one: most unhealthy behavior, to five: most healthy behavior. The answers were summed and averaged. The population of
interest is the patients at the regional hospital. A prior survey of patients had found the mean score for the population of patients
to be μ= 2.9. After careful review of these data, the hospital nutritionist decided that patients could benefit from nutrition
education. The current survey was implemented after patients were subjected to this education, and it produced these sample
statistics for the 15 patients sampled: x = 3.3 and s = 1.2. We would like to know if the education improved nutrition behavior.
The hypotheses to be tested are:
Ho μ=2.9 vs. Ha: x = 3.3.
Ho μ=2.9 vs. Ha μ> 2.9.
Ho μ=3.3 vs. Ha
µ< 2.9.
Ho μ=2.9 vs. Ha
μ> 3.3.
10:39 PM
Transcribed Image Text:A randomly sampled group of patients at a major U.S. regional hospital became part of a nutrition study on dietary habits. Part of the study consisted of a 50-question survey asking about types of foods consumed. Each question was scored on a scale from one: most unhealthy behavior, to five: most healthy behavior. The answers were summed and averaged. The population of interest is the patients at the regional hospital. A prior survey of patients had found the mean score for the population of patients to be μ= 2.9. After careful review of these data, the hospital nutritionist decided that patients could benefit from nutrition education. The current survey was implemented after patients were subjected to this education, and it produced these sample statistics for the 15 patients sampled: x = 3.3 and s = 1.2. We would like to know if the education improved nutrition behavior. The hypotheses to be tested are: Ho μ=2.9 vs. Ha: x = 3.3. Ho μ=2.9 vs. Ha μ> 2.9. Ho μ=3.3 vs. Ha µ< 2.9. Ho μ=2.9 vs. Ha μ> 3.3. 10:39 PM
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