The red dots in the middle of each violin plot represent the means of the two distributions.What do these means suggest about the findings of this study (understanding that we'd have to doinferential statistics to actually draw a conclusion)? Remember that more rounds of negotiation indicate alack of cooperation-a longer time to get to an agreement.O A. There does not seem to be a difference in cooperation between those who ate from shared platesand those who ate from individual plates.O B. Those who ate from shared plates appeared to engage in more rounds of negotiation than thosewho ate from individual plates, suggesting that cooperation was lower for participants who had toshare.O C. Those who ate from shared plates appeared to engage in fewer rounds of negotiation than thosewho ate from individual plates, suggesting that cooperation continued even after participants weredone eating.O D. This graph does not provide us with enough information to make an educated guess about thefinding. In Chapter 3, we introduced the violin plot. In their results, the researchers included this pair of violinplots.2015Number of10negotiation rounds5Individual platesShared platesCondition........|1..

Answered: The red dots in the middle of each…

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 TA in statistics thinks that the format of the conferences and the timing of the assignments may affect students' assignment marks (out of 10). He decided to design three conferences with a different format: (1) with lecturing, (2) with demonstrating problems, and (3) with involving students in active problem-solving. Twelve students attended one of the conferences (four in each format) and asked to submit their assignments at week 3. Another twelve students attended one of the conferences but asked to submit their assignments at week 5. The data are tabled below: Assignment Week 3 Week 5 Lecture 6,7,5,7 5,5,4,5 Format Demo problems 7,8,8,9 6,7,7,6 Active problems 9,10,10,10 8,9,9,10 Note: ΣΣΣx=1385 Perform the ANOVA test and table the results, stating all critical values. State and explain what should be the follow-up analysis after the overall F-test if any (NO calculation but just explain).
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.
Suppose the Federal Aviation Administration (FAA) would like to compare the on-time performances of different airlines on domestic, nonstop flights. The following table shows three different airlines and the frequency of flights that arrived early, on-time, and late for each. Identify the correct conclusion using the 0.1 level of significance. Question 3 options: 1) We conclude that Airline and Status are dependent on each other, based on a p-value of 0.0012 2) We conclude that Airline and Status are not related to each other, based on a p-value of 0.0012 3) We decide that Airline and Status are independent of one another, based on a p-value of 0.9988 4) We find that Airline and Status are related to each other, based on a p-value of 0.9988 5) There are two correct answers.
a) observed value of the test statistic b) the distribution of the test statistic: either X12 , X42 or X22c) p value and if this shows strong evidence for an association
Statement I. One way ANOVA will be utilized. Statement II. We are dealing with uncorrelated sample means. Statement III. We are dealing with correlated sample means. Statement IV. N is equal to 15. * Treatments Participant No Phone Hand-Held Hands-Free 1 4 1 2 3 1 2 3 6. 3 2 4 3 1 5 4 "Hypothetical data from an experiment examining driving performance under three telephone conditions. Statements I, Il are TRUE Statements I, II, I are FALSE Statements I, I, IV are TRUE O None of the above
Find the mean and median for each of the two samples, then compare the two sets of results. )A comparison is made between summer electric bills of those who have central air and those who have window units. May June July Aug Sept $65 Central $32 $59 $80 $90 Window $15 $86 $99 $120 $40 a) Central Mean b) Central Median c) Window Mean d) Window Median e) In your own words, compare the 2 electric bills of those who have central air to those who have window units. f) Explain how you found the Window Mean. g) Explain how you found the Window Median.
265 observations in total. option 1: allowed to work from home option 2: given an increased salary Company X wants to know what is the better option for boost retention. A) When comparing the results of employees who were given the option to work from home with those who received a greater wage, what are the probable confounding effects?
Q1. For each of the studies described in questions a) and b), indicate the appropriate statistical test for analyzing the relationship between the variables. Assume that the underlying assumptions of the tests have been satisfied. a) A researcher tested the relationship between college students’ need for achievement as assessed on a 20-item test and their grade point averages. Explain your decision. b) A consumer psychologist studied the relationship between gender and preference for Ford, Chevrolet, and Chrysler cars. One hundred men and 100 women were interviewed and asked which make they preferred. Explain your decision. c) A person who claims to have psychic powers tries to predict the outcome of a roll of a die on each of 100 trials. He correctly predicts 21 rolls. Using an alpha level of 0.05 as a criterion, what should we conclude about the person’s claim?
Monthly salary computations from two different clothing companies yielded the following data: n=7, ?=9,130$, ?=386$; ?= ?, ?=8,840$, ?=212$. At the level of significance 0.05, can we conclude that the mean monthly salary from the two companie is not the same?
AA www-awu.aleks.com A XA ALEKS - Emily Men... S Module 8 Quiz Prac... English 4 V13: 3932 Outline PE O MODULE 10: INTERPRETING CATEGORICAL AND QUANTITATIVE DATA Calculating relative frequencies in a contingency table D 1/5 A sample of 338 students at a university is surveyed. The students are classified according to gender ("female" or "male"). They are also classified according to major ("biology", "business", "engineering", "mathematics", or "computer science"). The results are given in the contingency table below. Biology Business Engineering Mathematics Computer science Female 42 50 32 21 23 Male 45 37 27 36 25 Among all the students in the sample, what is the relative frequency of male mathematics majors? Round your answer to two decimal places.
Based on these tables, would you accept or reject the hypothesis that individuals in bad neighborhoods commit more crime?
The association between occurrence of convictions and family income was examined by following a cohort of 395 boys for about 20 years, starting at age 8-9. The following table shows number of convictions with respect to three family income brackets: a)What type of table is this? b) Display the same data using a mosaic plot. c) What type of variable is income level? How should this affect your graph? d) By viewing the table and the graph, describe any apparent association between income and later convictions. e) Does the table or the graph better reveal the association between convictions and income? Pls help and explain all parts correctly, thank you

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