DOESDRAWINGANIMAGE HELPМЕМORY?Exercises 8.27 to 8.29 describe three differentexperiments investigating the effect of drawing onmemory. In each experiment, participants were ran-domly divided into three groups and shown a listof 10 words to memorize. The response variable isthe number of words participants are able to recall.For each experiment, construct an ANOVA table toassess the difference in mean word recall betweenthe three groups and answer the following ques-tions.(a) Which method had the highest mean recall inthe sample? Which had the lowest?(b) What is the F-statistic?(c) What is the p-value? 8.28 Participants were instructed to either draw animage for each word, visualize an image for eachword, or write the word. The summary statistics fornumber of words recalled (out of 10) are shown inTable 8.11.Table 8.11 What helps memoryrecall? Experiment 2MeanSt.Dev.GroupinDraw95.11.1Visualize3.71.7Write9.3.21.3Overall274.01.566

Draw method has highest mean And write method has lowest mean in the sample

Answered: (a) Which method had the highest mean…

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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Researchers were interested in assessing whether stress levels are different at the beginning of the semester compared to finals week. To test this, stress was measured in 5 students at the start of the semester and then again at the end of the semester during finals week. Participant Stress 1 Stress 2 Difference Score (Di) (Di - Mdiff)2 1 22 22 0 2 32 34 -2 3 24 25 -1 4 28 30 -2 5 26 29 -3 What is the observed test statistic (i.e., tobs)? Round to 2 decimal places.
In a one way ANOVA the following table is obtained: ANOVA Source: Factor, df= 4, SS=48.0, MS= 12.0, F= 0 Source: Error, df=10, SS=30.0, MS= 3.0, Source: total, df=14, SS= 78.0 Test for equal factor means using x=.05.
6. Explain the reasoning behind announcing one's choice of using a one-tailed test before performing the statistical analysis on an observed data set.
Describe a study in which you can use both nonparametric and parametric statistics. A researcher has participants expecting to receive either painful or mild electrical shocks during a study wait in a quarter-full waiting room with other participants. He then measures whether they choose to sit next to other participants or if they sit far away on their own. What is the best test to run for this study and why?
Explain the difference between hypothesis testing with test statistics vs. hypothesis testingwith p-values.
At a local food processing plant, it used to take an average of 90 minutes for new workers to learn a food processing job. Recently the company installed a new food processing machine. The supervisor at the company wants to find if the mean time taken by new workers to learn the food processing procedure on this new machine is different from 90 minutes. A sample of 20 workers showed that it took, on average, 85 minutes for them to learn the food processing procedure on the new machine. It is known that the learning times for all new workers are normally distributed with a population standard deviation of 7 minutes. Use a significance level of 0.01 to test the claim that the mean time is different from 90 minutes. What is the decision? A) Reject Ho because the test statistic is in the critical region and the p-value is greater than the significance level. B) Reject Ho because the test statistic is not in the critical region and the p-value is greater than the significance level.…
At a local food processing plant, it used to take an average of 90 minutes for new workers to learn a food processing job. Recently the company installed a new food processing machine. The supervisor at the company wants to find if the mean time taken by new workers to learn the food processing procedure on this new machine is different from 90 minutes. A sample of 20 workers showed that it took, on average, 85 minutes for them to learn the food processing procedure on the new machine. It is known that the learning times for all new workers are normally distributed with a population standard deviation of 7 minutes. Use a significance level of 0.01 to test the claim that the mean time is different from 90 minutes. What is the test statistic? A) -7.01 B) -2.539 C) -3.19 D) -2.528 E) -1.96

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(a) Which method had the highest mean recall in the sample? Which had the lowest? (b) What is the F-statistic? (c) What is the p-value?