A randomly sampled group of patients at a major U.S. regional hospital became part of a nutrition study on dietary habits. Partof the study consisted of a 50-question survey asking about types of foods consumed. Each question was scored on a scale fromone: most unhealthy behavior, to five: most healthy behavior. The answers were summed and averaged. The population ofinterest is the patients at the regional hospital. A prior survey of patients had found the mean score for the population of patientsto be μ= 2.9. After careful review of these data, the hospital nutritionist decided that patients could benefit from nutritioneducation. The current survey was implemented after patients were subjected to this education, and it produced these samplestatistics 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. Haµ< 2.9.Ho μ=2.9 vs. Haμ> 3.3.10:39 PM

The parameter to be tested is the population mean score of the patients which will be represented by…

Answered: A randomly sampled group of patients at…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Create a table based on the following data. Compute the percentage of each figure given. Show the percentages only in your table, not the whole numbers given. Last January 2020, a survey was conducted among 75 men and 75 women in the Philippines. The survey aims to know the patterns of Internet use among men and women 18 years old and above. Men and women are equally likely to use the Internet. Age is a strong predictor of Internet use, such that Internet use is highest among the youth and it decreases with age. Sixty-one youth aged 18-24 are Internet users where 29 are males and 32 are females, compared to only 37 among those aged 25-34 where 18 are males and 19 are females. Twenty-seven among those aged 35-44 are internet users where 15 are males and 12 are females while those aged 45-54 have 9 male Internet users and 7 female users. Four male users of Internet and 5 female users are aged 55 and above. Create a Table 1 and a title that generally illustrates the data above.
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A contributor for the local newspaper is writing an article for the weekly fitness section. To prepare for the story, she conducts a study to compare the exercise habits of people who exercise in the morning to the exercise habits of people who work out in the afternoon or evening. She selects three different health centers from which to draw her samples. The 57 people she sampled who work out in the morning have a mean of 4.8 hours of exercise each week. The 56 people surveyed who exercise in the afternoon or evening have a mean of 4.2 hours of exercise each week. Assume that the weekly exercise times have a population standard deviation of 0.8 hours for people who exercise in the morning and 0.3 hours for people who exercise in the afternoon or evening. Let Population 1 be people who exercise in the morning and Population 2 be people who exercise in the afternoon or evening. Step 1 of 2: Construct a 95 % confidence interval for the true difference between the mean amounts of time…
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In a study looking at undergraduate students’ perceptions of sense of community at their university, a researcher hypothesizes that the farther away students live from campus (in miles), the less they feel they are part of the university community. The researcher collected data for the following two variables – miles from campus and part of community (rating from 1-10 of how much they felt part of the university community). what is the scale of measurement? (i.e., nominal, ordinal, interval or ratio)
Lisa took a survey of her classmates' favorite sport and recorded their genders. The results are in the table below: Preferred Sport Football Baseball Basketball Tennis Other Total Girls 2 3 5 4 3 Boys 8 2 6 4 3 Total What is the marginal relative frequency of survey participants who prefer tennis?

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