A researcherwanted to knowstudy perceivedattractivenessand self-esteem. Theyfloatedquestionnairesto 200randomlychosen collegestudents withan equalnumber ofmales andfemales fromvariousdepartments inSTELA. Thehighest 50 andlowest 50scorers on theself-esteemtest werecompared interms of theirratings ofperceivedattractiveness. For the next items, identity the appropriate statistical test that will be utilized inhypothesis testing.SET- testT- test (onefactor/sample) (Dependent) (Independent)T-testF- Test(StandardError)

1)T-test (Dependent) as we are comparing the same population after one week

Answered: A researcher wanted to know study…

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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Suppose you have a data set that includes the values 20,30, and 50. If you add a fourth value to this data set, and after doing that the mean of the data set is 50, what was the value that you added? a) 20 b) 40 c) 50 d) 100
1. Risk Ratio a. Table 1 b. Table 2 2. Odds Ratio a. Table 1 b. Table 2 3. Answer the following using the information calculated above: a. Discuss how the Risk Ratio compare to the odds ratio for table 1. b. Discuss how the risk ratio compare to the odds ratio for table 2. c. Describe the reasons for the differences/simi
A researcher wants to know if there is an association between feelings of hunger and aggressive behavior (in other words, is being “hangry” a real phenomenon?). He asks participants to track their hunger levels and feelings of anger and aggression over the course of a week. What is the independent variable? A) Hunger levels B) how much they've eaten C) Feelings of aggression D) There is no IV for this type of analysis E) Anger
Dr. A. Ventura is interested in determining what kinds and how many pets people own in Bakersfield. He stands outside Petco and asks people what kind of pet they own. This is the result of his survey: dog=1; cat=2; bird=3; reptile=4; fish=5; other=6 1,1,2,2,2,1,1,3,2,3,1,1,1,2,2,4,4,2,2,1,1,1,5,4,3,4,1,1,1,2,2,6,1,1,2,2,1,2,1,2,6,3,4,5
Suppose an instructor wants to know the average height, gender distribution, academic performance (bad, good, very good, excellent), and year of admission of the students of the college of the science of SQU. He divided the students into male and female and took a random sample of 30 male and 30 female students. a) What is the implied population in this study? b) Identify the variables of the study c) Classify the identified variables according to qualitative and quantitative. d) Identify the level of measurement of each identified variable e) Which sampling technique was used to select 60 students?
A panel of Judges A and B graded seven debators and independently awarded the following marks : Debator 1 3 4. Marks by A 40 34 28 30 44 38 31 Marks by B 32 39 26 30 38 34 28 An eighth debator was awarded 36 marks by Judge A while Judge B was not present. If Judge B were also present, how many marks would you expect him to award to the eighth debator assuming that the same degree of relationship exists in their judgement.
The income of residents of Chicago, IL has a bell shaped and symmetric histogram, with a mean of $65,000 and a S.D. of $13,000. 1) What percentage of residents have an income more than $78,000 or less than $52,000? 2) what percentage of residents have an income between $39,000 and $91,000? 3) What percentage of residents have an income less than $104,000? 4) What percentage have an income more than $65000? 5) Less than $26,000 Hint: you need to draw a curve for each part 1-4, and calculate the mean ± 1, 2, 3 S.D.
The University of Chicago's General Social Survey (GSS) is the nation's most important social science sample survey. For reasons known only to social scientists, the GSS regularly asks a random sample of people their astrological sign. Here are the counts of responses from a recent GSS of 4344 people: Sign Aries Taurus Count 321 360 Sign Libra Scorpio Count 392 329 Gemini 367 Sagittarius 331 Cancer 374 Capricorn 354 Leo 383 Aquarius 376 Virgo 402 Pisces 355 We want to test Ho: All 12 astrological signs are equally likely versus Ha: All 12 astrological signs are not equally likely. Use a chi-square goodness-of-fit test to compute a test statistic and P-value. Do these data provide convincing evidence at the 1% significance level that all 12 signs are not equally likely? Because the P-value of 0.6562 > 0.05, we cannot reject the null hypothesis. We cannot conclude that all 12 signs are not equally likely. Because the P-value of 0.0487 > 0.01, we cannot reject the null hypothesis. We…
d). What is the pmf? 3) What is the median, ã ?
A histogram which is not symmetrically bell-shaped is called shrewed skewed stewed spoofed
Given the data : 15 13,21,27 ,25,36,34,40,46,44,48,51,55,56,62,75 A) find the median, the lower quartile (QL), and the upper quartile (QU) B ) find the lower and the upper inner fences, the lower and the upper fences C ) Is the value 75 in the given data set an outliner? How?
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A researcher wanted to know study perceived attractiveness and self- esteem. They floated questionnaires to 200 randomly chosen college students with an equal number of males and females from various departments in STELA. The