Researchers conducted a study to determine whether magnets are effective in treating back pain. Pain was measured using the visual analog scale, and the resultsgiven below are among the results obtained in the study. Higher scores correspond to greater pain levels. Is this study an experiment or an observational study?Explain.Reduction in Pain Level After Magnet Treatment: n= 20, x = 0.493, s= 0.957Reduction in Pain Level After Sham Treatment: n = 20, x = 0.436, s= 1.42Choose the correct answer below.O A. The study is an experiment because the subjects are a systematic sample.O B. The study is an observational study because there was no attempt to modify the individuals being studied.O c. The study is an experiment because subjects were given treatments.O D. The study is an observational study because the subjects are a simple random sample.

Given that Researchers conducted a study to determine whether magnets are effective in treating…

Answered: Researchers conducted a study to…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Acid rain Biologists studying the effects of acid rainon wildlife collected data from 163 streams in theAdirondack Mountains. They recorded the pH (acidity) of the water and the BCI, a measure of biological diver-sity, and they calculated R2 = 27,. Here’s a scatterplot of BCI against pH:a) What is the correlation between pH and BCI?b) Describe the association between these two variables.c) If a stream has average pH, what would you predictabout the BCI?d) In a stream where the pH is 3 standard deviationsabove average, what would you predict about the BCI?
For the following research questions, create one null hypothesis, one directional research hypothesis, and one nondirectional research hypothesis. What are the effects of attention span on out-of-seat classroom behavior?
Question 15
Please do not give solution in image format thanku.
Please help me with this question
A special education teacher did research on whether or not there is a relationship between the number of students in his class and the number incidents of “acting out” behaviors exhibited by the autistic students in the classroom. He collects data for a year and aggregates them by month. He obtained the statistics below, r= -.863 R2=.74 b= -1.212294 a= 131.176598 10.) How does the presence of more students affect the incidents in the class? a) as students are added the incidences increase b) as students are added the incidences decrease c) the number of students does not affect acting out d) the number of students caused more incidents How much of the variability of acting out is explained by the number of students in the class?___________
Magnet Treatment of Pain Researchers conducted a study to determine whether magnets are effective in treating back pain, with results given below (based on data from “Bipolar Permanent Magnets for the Treatment of Chronic Lower Back Pain: A Pilot Study,” by Collacott, Zimmerman, White, and Rindone, Journal of the American Medical Association, Vol. 283, No. 10). The values represent measurements of pain using the visual analog scale. Use a 0.05 significance level to test the claim that those given a sham treatment (similar to a placebo) have pain reductions that vary more than the pain reductions for those treated with magnets.
A) Find the correlation coefficient , rounded to the nearest 10th. B) What percent of the variability in static weight can be explained by the linear model? Round to the nearest 10th. C) Using the predictive model suggested, what would the static weight of a truck be if its weight in motion was 28,000 pounds?
please answer quickly
A researcher wants to make an equation that will predict a person's support for domestic surveillance from a variety of demographic characteristics (e.g., age, income). What method will they use? A) Multiple regression B) Correlation C) Two-factor ANOVA D) One-sample t-test
A 1982 paper by Hans Rosendal and Samuel Shaw established a correlation between the maximum sustained surface wind speeds to the minimum sea level pressure in central north pacific cyclones. Use the following data below to test this result. Minimum Sea Level Pressure (in millibars) (x) Surface Wind Speed (in knots) (y) 968 89 1022 42 1012 72 931 130 984 73 992 97 942 121 974 77 1008 93 939 126 956 115 1014 86 Calculate the correlation coefficient. Round to three decimals Find the equation of the regression line. Round each value to two decimals Preview New data has just arrived indicating that the minimum sea level pressure for a storm is 955 millibars. Predict the maximum sustained wind speed in knots. Round your answer to the nearest integer
To measure the relation between the gender and education level, which one is the appropriate statistic? Select one: O a. Cramer's V b. Phi (f) c. Spearman's rank correlation d. Correlation coefficient e. Gamma

SEE MORE QUESTIONS

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS