10. Of the three hypotheses below,moderation.concern(s) mediation and.concern(s)I. Bilingualism predicts stronger multitasking abilities, but only in older adults.II. Bilingualism predicts stronger multitasking abilities because the lifelong experience ofusing two languages reorganizes neural networks that support attention.III. Bilingualism predicts stronger multitasking abilities, and this link is especially strongamong people who learned their two languages early in life.I; II and IIIb. II and III; Iс. 1;B I and IId. I and III; IIa.

In the Mediational hypothesis, it is asserted that the dependent variable is unaffected by the…

Answered: 10. Of the three hypotheses below,…

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 27PPS

See similar textbooks

Similar questions

Not using excel. One possible explanation for why some bird’s migration and others maintain year-round residency in a single location is intelligence. Specifically, birds with small brains, relative to their body size, are simply not smart enough to find food during the winter and must migrate to warmer climates where food is easily available (Sol, Lefebvre, & Rodriguez- Teijeiro, 2015). Birds with bigger brain on the other hand, are more creative and can find food even when the weather turns harsh. Following are hypothetical data similar to the actual research results. The numbers represent relative brain size for the individual birds in each sample. Non-Migrating Short Distance Migrates Long Distance Migrates 18 6 4 13 11 9 N= 18 19 7 5 G= 180 12 9 6 x²= 2150 16 8 5 12 13 7 M= 15 M= 9 M= 6 T= 90 T= 54 T= 36 SS= 48 SS= 34 SS= 16 a) Use an ANOVA…
The Simple Solution to Traffic A study in 2017 showed that Metro Manila has the 3rd worst traffic among its Southeast Asian neighbors. Government authorities are receiving several complaints from commuters due to the worst transport connectivity and endless queueing and congestions among rail transit stations. In this regard, aligning projects for the improvement of the traffic system as part of the "Metro Manila Dream (MMD) Plan" was set into motion. However, media reports claimed that many commuters did not feel any improvement in the current traffic situation in the Metro, especially in Epifanio Delos Santos Avenue (EDSA). The chair of the Metro Manila Development Authority (MMDA) is keen to verify if the road traffic conditions are fairly improving in EDSA despite various media reports. In the past, the recorded vehicular traffic speed in EDSA shows about 15 kph, on the average. To do this, the MMDA deployed speed measuring radars in which the traffic speeds of 200 randomly sampled…
Social media provides an enormous amount of data about the activities and habits of people using social platforms like Face book and Twitter. The belief is that mining that data provides a treasure trove for those who seek to quantify and predict future human behavior. A marketer is planning a survey of Internet users in the United States to determine social media usage. The objective of the survey is to gain insight on these three items: key social media platforms used, frequency of social media usage, and demographics of key social media platform users. a. For each of the three items listed, indicate whether the variables are categorical or numerical. If a variable is numerical, is it dis crete or continuous? b. Develop five categorical questions for the survey. c. Develop five numerical questions for the survey.
Which of the independent variables retains the strongest association with the number of children a respondent has when all other variables in the model are controlled? What is that association? Which has the weakest when other variables are controlled?
Imagine you were interested in studying whether taking 6 weeks of karate lessons improves children’s self-regulation. You compare children who take karate vs. Swimming lessons before and after 6 weeks of training. Which of the following results would be an example of an interaction: A. There is no difference the karate and swimming groups self-regulation at the start of training, but after 6 weeks self-regulation is better in the karate group than in the swimming group B. There is no difference the karate and swimming groups self-regulation at the start or end of training C. There is no difference in self regulation scores for either group before vs after training D. Both groups improved their self-regulation over the 6 weeks to the same extent
Economists, Angrist and Lavy (1999) exploited an 800 year-old rule regarding classroom size to estimate the causal effect of smaller classes on student achievement. The rule, made famous by 12th century scholar Maimonides, states that one teacher is sufficient to manage a class with up to 40 students. Classes with more than 40 students will require 2 teachers. Angrist and Lavy noticed that strict application of this rule in certain areas meant that if 80 students were enrolled in a school, then the school would divide them up into two groups of 40 students per teacher. If 81 students were enrolled, however, they would be placed in three classes of 27 students each. The rule thus generated sharp discontinuities in class sizes within schools, which, the authors argue, allow them to provide causal evidence of a boost in fifth grade math and reading scores as a result of smaller class size. a. What research design is implied by the authors’ use of Maimonides’ rule to estimate the causal…
Scenario: A researcher wants to study the effects of childhood stress, genetics, and their interaction for predicting aggression in adults. The researcher recruited 40 subjects, 20 reported they had no childhood stress and 20 reported they experienced severe childhood stress. The researcher is specifically interested in looking at the MAOA gene, because different versions of this gene are linked to aggression. The researcher conducts a genetic test and finds that half of subjects in each group have a gene for low MAOA activity and the other half have the gene for high MAOA activity. The researchers have the subjects self-rate their aggressive behavior over the last 6 months. 1. Given the scenario above, what are the null and alternative hypotheses? 2. Experimental design:a. What are the independent and dependent variables in this study? b. How many levels of each independent variable are there? c. What type of factorial ANOVA is this?
Brainstorm and briefly describe three scenarios for which a quasi-experimental design would be appropriate?
Monitoring quality of power equipment. Mechanical Engineering (Feb. 2005) reported on the need for wireless networks to monitor the quality of industrial equipment. Forexample, consider Eaton Corp., a company that developsdistribution products. Eaton estimates that 90% of theelectrical switching devices it sells can monitor the qualityof the power running through the device. Eaton further estimates that of the buyers of electrical switching devicescapable of monitoring quality, 90% do not wire the equipment up for that purpose. Use this information to estimatethe probability that an Eaton electrical switching device iscapable of monitoring power quality and is wired up forthat purpose.
The Federal Bureau of Investigation (FBI), as part of its internal security mission, serves as a database for all the reported crimes committed in the United States. One question that might be of interest is does having more police officers reduce the number of homicides? To investigate this claim, the 2013 data from the twenty largest municipal cities was supplied by the FBI's Uniform Crime Report. Below are two observations from the dataset: > head (cities) City Pop Homicides Police Density MedHome Mayor 1 New York 8175.133 335 4.2595 27016.30 5.5390 1 2 Chicago 2695.598 414 4.4309 11843.58 1.8310 The variables included in the study are: Name of city Population of city in 1,000s of people Number of homicides in the year 2013 Number of police officers per 1,000 people Number of people per square mile Median home price in $100,000 1 if city has a "Strong Mayor" form of government; 0 if not City Рор Homicides Police Density MedHome Мayor Model: log(u;) = Bo + B1Police; + B2MedHome; +…
Air traffic controllers perform the vital function of regulating the traffic of passenger planes. Frequently, air traffic controllers work long hours with little sleep . Researchers wanted to test their ability to make basic decisions as they become increasingly sleep deprived . To test their abilities, a sample of 10 air traffic controllers is selected and given a decision-making skills test following 12-hour, 24-hour, and 48 -hour sleep deprivation. Higher scores indicate better decision-making skills. The table lists the hypothetical results of this study. 12hours 24Hours 48hours21 16 15 17 20 19 32 21 20 25 19 12 21 13 14 19 19 13 (a) Complete the F table. (b) Compute a Bonferroni procedure and interpret the results. solve by hand steps and spss process show results
Imagine you are an educational researcher who wants to learn about the type of psychological atmosphere in which middle school students feel most comfortable and best able to concentrate on their studies. You plan to look at a wide variety of factors that might contribute to such an atmosphere—both physical factors (e.g., cleanliness and colorfulness of the school building) and social factors—(e.g., teacher-student relationships, general tolerance for diverse behaviors and beliefs). You realize that students might identify important factors that you yourself haven't even thought of. In this situation, your best choice would probably be: an experimental study with at least three treatment groups. an experimental study with one treatment group and one control group. a descriptive, quantitative study. a qualitative study.

SEE MORE QUESTIONS

Recommended textbooks for you

Glencoe Algebra 1, Student Edition, 9780079039897…

Algebra

ISBN:

9780079039897

Author:

Carter

Publisher:

McGraw Hill

Big Ideas Math A Bridge To Success Algebra 1: Stu…

Algebra

ISBN:

9781680331141

Author:

HOUGHTON MIFFLIN HARCOURT

Publisher:

Houghton Mifflin Harcourt

Glencoe Algebra 1, Student Edition, 9780079039897…

Algebra

ISBN:

9780079039897

Author:

Carter

Publisher:

McGraw Hill

Big Ideas Math A Bridge To Success Algebra 1: Stu…

Algebra

ISBN:

9781680331141

Author:

HOUGHTON MIFFLIN HARCOURT

Publisher:

Houghton Mifflin Harcourt

SEE MORE TEXTBOOKS