Question 3Researchers performed an investigation in which subjects completed a death anxiety scaleand a checklist designed to measure degree of religiosity (belief in a religion, attendanceat religious services, number of times per week of prayer etc.). A data sample is below.3a) Draw an appropriate scatterplot to illustrate the data in this study.Death AnxietyScore1515141413101210119Degree ofReligiosity431159 6 49 10 1514Death anxiety score:high scores high anxietyDegree of Religiosity:high scores high religiosity 3b) Calculate the value of the Pearson's product-moment correlation coefficient, r.You may use either of the correlation formulae discussed in the lecture, both of theseare given on page 6.

3a) Scatter plot: Steps to construct scatter plot in Excel: Enter the data for Anxiety score and…

Answered: Researchers performed an investigation…

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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A scientific study was conducted to determine the hours of sleep that college students get per night. The study surveyed 20 college students and obtained the following data:8, 8.3, 7.8, 7.7, 8.6, 8.1, 7.7, 8.5, 8.1, 8.2, 8.2, 7.9, 8.5, 7.9, 8.3, 8.2, 7.8, 7.8, 7.8, 7.7Assuming the population standard deviation is σ=0.31σ=0.31, construct a 86% confidence interval for the average hours of sleep per night that college students get.xˉ=x̄=α2=α2=zα2=zα2=Margin of Error: E=E=We are 86% confident that college students get an average of between hours and hours of sleep per night. Submit QuestionQuestion
given data: 2.1, 2.8, 3.7, 4.1, 4.6, 5.8, 6.3, 7.4, 8.2, 8.5, 9.6, 10.1, 10.3, 10.9, 11.0, 11.8, 12.4, 13.6, 13.9, 14.3, 14.6, 15.5, 15.9, 16.7, 16.9 Can I get help with... 6a) Two data sets both have a mean of 50. One has a standard deviation of 2 and the other has a standard deviation of 10. Describe what is different about these two data sets. b) Since the mean and the median both describe the same characteristic, explain why they are not always the same. (no formulas) c) When and why would the mean be better to use than the median?
In a study conducted to examine the quality of fish after 7 days in ice storage, ten raw fish of the same kind and approximately the same size were caught and prepared for ice storage. The fish were placed in ice storage at different times after being caught. A measure of fish quality was given to each fish after 7 days in ice storage. Review the accompanying sample data and scatterplot, where "Time" is the number of hours after being caught that the fish was placed in ice storage and "Fish Quality" is the measure given to each fish after 7 days in ice storage (higher numbers mean better quality). Is it appropriate to use the correlation coefficient to describe the strength of the relationship between "Time" and "Fish Quality"? i Click the icon to view the sample data and the corresponding scatterplot. ..... Choose the correct answer below. A. No, because "Fish Quality" is not quantitative. B. No, because there are a couple of influential outliers. C. Yes, because both variables are…
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