analyze all problems using spss or r. results sections must be typed. pay particular attention to italics, decimals, and appropriate wording. you should include both descriptive and inferential statistics. please put all results sections on the same document and attach as the first page. you may either add the outputs to the end as a pdf or attach the spss or r output separately in order to show your work. 1. paired samples: a health educator wants to evaluate the effects of a dental film on the frequency with which children brush their teeth. a random selection of eight children is used for the experiment. first, a baseline of the number of times children brush their teeth over a month’s period is established. next, the children are shown the dental film and again the number of teeth brushings are recorded for a month. the following data were recorded: subject# 1 2 3 4 5 6 7 8 before: 25 27 21 28 29 22 24 18 after: 26 29 24 29 21 23 27 27 2. independent samples: an agricultural engineer is testing the effect of a new fertilizer on the time it takes before soybean plants are harvestable. to test this, he plants 16 soybean plants and then randomly divided them two groups. one of the groups is given the usual fertilizer (control group) while the other group is given the new fertilizer (experimental group). the engineer measures the time in days until each plant is harvestable. the following data are obtained for each plant: control fertilizer: 47 55 47 50 50 53 55 58 experimental fertilizer: 50 53 56 58 61 58 60 55

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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analyze all problems using spss or r. results sections must be typed. pay particular attention to italics, decimals, and appropriate wording. you should include both descriptive and inferential statistics. please put all results sections on the same document and attach as the first page. you may either add the outputs to the end as a pdf or attach the spss or r output separately in order to show your work. 1. paired samples: a health educator wants to evaluate the effects of a dental film on the frequency with which children brush their teeth. a random selection of eight children is used for the experiment. first, a baseline of the number of times children brush their teeth over a month’s period is established. next, the children are shown the dental film and again the number of teeth brushings are recorded for a month. the following data were recorded: subject# 1 2 3 4 5 6 7 8 before: 25 27 21 28 29 22 24 18 after: 26 29 24 29 21 23 27 27 2. independent samples: an agricultural engineer is testing the effect of a new fertilizer on the time it takes before soybean plants are harvestable. to test this, he plants 16 soybean plants and then randomly divided them two groups. one of the groups is given the usual fertilizer (control group) while the other group is given the new fertilizer (experimental group). the engineer measures the time in days until each plant is harvestable. the following data are obtained for each plant: control fertilizer: 47 55 47 50 50 53 55 58 experimental fertilizer: 50 53 56 58 61 58 60 55

Statistics that allow for inferences or estimates about the population. Inferential statistics enable analysts come to conclusions about the population based on sample data. Inferential statistics cover the basics of inferential statistics, all kinds of hypotheses tests and their confidence intervals, design of experiments, and statistical power and errors. It also includes point estimation techniques, limit theorems, sampling distributions, approximations, and bounds. Correlation, regression, and association are also covered under inferential statistics to infer relationships between variables.

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