Learning Task 2: Statistical Test Check!Directions: Determine the statistical test/s appropriate for the sample research. Moke sure fo evploin your decitionsentences.es fs esAppropiofeStotfsticalTestResearch TitleErxglionationRelationship between Acodemic Stressors and Leaming Preferences of Senicr HighSchool Students2 Reading Eectronic Leaming Materials as a Support for Vocabulary of Grade I Pupls3. Impoct of the Implementation of COVD - 19 Health Protocols in Supermarkets onConsumer Behavion4. Effects of Moning Exercise on the Health Arxiety Levei of Senior Citizens5. Measuring the Gadgets Usage ol Children af Home during QuarantineAeeimilation (Time Ercome

In the field of research, the design methodology can be of two types - quantitative and qualitative.…

Answered: Learning Task 2: Statistical Test…

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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using tables 2 and 3 attached: ) Are the data in this study dependent or independent? How do you know this? ) Which t test statistic in Table 3 is the greatest for the 6-month follow-up? Which variable is being examined with this test statistic? What are the groups being examined with this test statistic? ) Compare the pretest to 3 months and 6 months t test statistics for BMI from Table 2. What is your conclusion regarding the effects of the health-promotion intervention on the BMI long term? ) How would you describe the result of t = -1.45 in this study? ) Which t test statistic listed in Table 3 represents the smallest relative difference between the pretest and 3 months? Is it statistically significant? What does this result mean? ) What are the assumptions for conducting a t-test for dependent groups? Which of these assumptions do you think were met by this study?
Do wearable devices that monitor diet and physical activity help people lose weight? Researchers had 237 subjects, already involved in a program of diet and exercise, use wearable technology for 24 months. They measured their weight (in kilograms) before using the technology and 24 months after using the technology. (a) Explain why the proper procedure to compare the mean weight before using the wearable technology and 24 months after using the wearable technology is a matched pairs t test. Choose the correct explanation. A person's weight before and after wearing the device would not be independent; thus, the data from this before and after study should be analyzed using a matched pairs t test. O A person's weight before and after wearing the device would be independent; thus, the data from this before and after study should be analyzed using a matched pairs t test. O A person's weight before and after wearing the device would be independent; thus, the data from this before and after…
Researchers were interested in assessing whether stress levels are different at the beginning of the semester compared to finals week. To test this, stress was measured in 5 students at the start of the semester and then again at the end of the semester during finals week. Participant Stress 1 Stress 2 Difference Score (Di) (Di - Mdiff)2 1 22 22 0 2 32 34 -2 3 24 25 -1 4 28 30 -2 5 26 29 -3 What is the observed test statistic (i.e., tobs)? Round to 2 decimal places.
Using a sample of 500 adults with the following variables: genhelf - variable recording general self- reported health coded 1 = very good, 2 = good, 3 = fair, 4 = poor sbp - variable recording systolic blood pressure - age - age of the respondent in years sex coded 1 = male and 2 = female hi_sbp - indicator of high blood pressure coded 1 if the respondent's sbp is 130 or higher and 0 otherwise What type of chart is MOST appropriate for the variable sbp? a/ pie chart b/ bar chart c/ histogram
Describe two advantages a repeated measures t-test has over an independent sample t -test study design. Give an example of a study where a repeated measures design would be appropriate
Report an appropriate hypothesis test and use a 5% significance level. The alternative hypothesis for the One-way Anova F-test would be Group of answer choices Ha: Density affects firing temperature. Ha: Firing temperature affects density. Ha: Firing temperature does not affect density. Ha: Density does not affect firing temperature.
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On a trial basis, State College admitted 300 students from the lowest third of their high school graduation class. They were randomly divided into 3 groups. Group A received extensive training in study habits Group B received motivational lectures; and Group C received no special treatment. At the end of the year, the average grades of the groups were compared. Identify the following: * What is the Independent variable? * What is the Dependent variable? * Who is in the Experimental Group? * Who is in the Control Group? * What are at least 2 potential extraneous variables?
The Comprehensive Assessment of Outcomes in Statistics (CAOS) exam is an online multiple-choice teston concepts covered in a typical introductory statistics course. Students can take a pretest version beforeinstruction and then a posttest version after instruction. Fter taking the class, the pretest and posttest scoresare compared to assess student learning in the course.For a random sample of 10 students who took the class from Professor X, the posttest scores increased overthe pretest score by an average of 14 percentage points, with a standard deviation of 6.4 points. a) What additional information (if any!) do we need to know in order to use t-based methods from thisdata set? b) Compute a 95% confidence interval for the mean improvement in CAOS scores for students who tookthe class from Profesor X. c) The developers of the CAOS exam report that, for all students who have taken the CAOS exam (andnot just Professor X’s students), the mean improvment is 10.1. Do we have evidence to…

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