A cognitive psychologist conducted a studyon the perception of speech sounds in twotypes of discrimination tasks. A total of 30participants completed an experiment. Theparticipants were given a standard series ofvowel sounds as part of a two intervaldiscrimination task, and measured theirability to perceive them with a classificationtask, on which higher Scores mean moresounds correctly perceived. The participantswere then given the same vowel sounds in afour interval discrimination task (vowelsounds presented in between other sounds)followed by the classification task again. Didthe types of intervals have an effect onparticipants' ability to perceive the vowelsounds17. Identify the null and alternativehypotheses:What is the correct CV and decision rule forrejecting the null hypothesisWhat is the standard error Show your work.What is the observed value oft Show yourwork.What is eta Show your work.

A t-test is a type of inferential statistic used to determine if there is a significant difference…

Answered: A cognitive psychologist conducted a…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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A student organization surveyed both current students and recent graduates to obtain information on the quality of teaching at a particular university. An analysis of the responses provided the following teaching-ability rankings. Professor O Ho: Ps #0 H₂: Ps= 0 O Ho: Ps ≤0 Ha: P >0 O Ho: Ps > 0 = 0 H₂: Ps= 1 2 ● Ho: Ps= 0 Ha: Ps *0 3 4 5 6 7 8 9 10 Current Students 4 6 8 3 1 2 5 10 7 9 Recent Graduates 6 8 5 1 2 3 Do the rankings given by the current students agree with the rankings given by the recent graduates? Compute the rank correlation between current students and recent graduates. (Round your answer to three decimal places.) 's= 0.624 ✓ 7 Use α = 0.10 and test for a significant rank correlation. State the null and alternative hypotheses. O Ho: Ps 20 Ha: Ps <0 9 10 4 Find the value of the test statistic. (Round your answer to two decimal places.) 2.26 X Find the p-value. (Round your answer to four decimal places.) p-value = 0.0537 X What is your conclusion? O Reject Ho. There is…
A psychologist wanted to know if students in her class were more likely to cheat if they were low achievers. She divided her 60 students into three groups (low, middle, and high) based on their mean exam score on the previous three tests. She then asked them to rate how likely they were to cheat on an exam if the opportunity presented itself with a very limited chance for consequences. The students rated their desire to cheat on a scale ranging from 1-100, with lower numbers indicating less desire to cheat. Before opening the data, what would you hypothesize about this research question? Open the data set. Before running any statistical analyses, glance through the data. Do you think that your hypothesis will be supported? Conduct descriptive analyses and report them here. Conduct a one-way ANOVA. Report your statistical findings (including any applicable tables in APA format) here. What would you conclude from this analysis? What would be your next steps, if this…
HOW TO INPUT IN EXCEL AND JAMOVI A psychologist would like to research if the Hope scale(Synder, et al., 1991) scores differ between those living in City A and City B. The 12-item scale consisted of two subscales: a 6-item agency subscale and a 6-item pathways subscales. Scores on the 12 items were averaged, with higher scores indicating higher levels of hope. The following scores were obtained. Use Student’s t-test for Independent Groups, alpha at .05 2 tail City A - 43 38 36 38 52 60 58 66 55 63 City B - 62 34 35 52 58 72 57 55 80 67
A cognitive psychologist conducted a study of whether familiarity of words (X) predicts the time it takes (in seconds) to press a button indicating whether the word is singular or plural (Y), with all participants being given the same words. Familiarity with these words was rated at a later time on a 7-point scale (with higher numbers indicating more familiarity). The participants' scores were: X : 6, 2, 5 ,3 ,7 Y : 0.3 , 1.5 , 0.8 , 1.4 ,0.1 a.Figure the correlation coefficient Describe the correlation Figure the linear prediction rule; list the b value, a value and the final formula Predict the time it takes to press a button if the familiarity with the word is 1
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A visiting comparative literature student from Cambridge University believes that contemporary readers prefer novels from George RR Martin (the author of the Games of Thrones saga) to Shakespeare. She devises a study in which 40 participants are asked to read excerpts from both Shakespeare plays and Games of Thrones books and rate their level of satisfaction for each excerpt. Satisfaction is measured using a 5-point Likert scale (5 indicates high satisfaction). In order to allow for a fair comparison, she hides the name of the authors and recruits a professional translator to adapt the Games of Thrones text to old Elizabethan English. The order of presentation is also randomised and balanced across participants. The attached CSV file contains the data that was collected for the experiment. What can you conclude from the results of this experiment? I require assistance on: Identifying the appropriate statistical test. Conducting the statistical test in JASP, Excel or SPSS. Reporting…
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During the pandemic, an HR manager randomly assigned 6 employees to work from homeand the other 6 employees to work from the office as usual. After three months, all 12employees’ job performance was tested. Scores for those working from home were 10, 12,14, 13, 11, 12, and scores for those who worked from the office were 8, 6, 10, 8, 9, and 7.The HR manager then compares the scores from both groups to determine which groupscores significantly higher.Based on the experiment above,a) Carry out a t-test using five steps of hypothesis testing with the 0.05 level ofsignificance at one-tailed. Explain your finding.b) Sketch the t-distribution involved.

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