2. A study was conducted to examine the difference between the older and younger adult teacherson perceived life satisfaction. A pilot study was conducted to examine this hypothesis. Ten olderadults (over the age of 50) and ten younger adults (between 20 and 40) were given a life satisfactiontest (known to have high reliability and validity). Scores on the measure range from 0 to 60 with highscores indicative of high life satisfaction, low scores indicative of low life satisfaction. Result of theanalysis is presented below.Older AdultsYounger AdultsМean44.528.1Variance75.3888888972.98888889ObservationsHypothesized Mean Difference1010df18x StatP(X<=x) one-tailCritical one-tailP(X<=x) two-tail4.2575466660.0002368321.7340636070.000473663x Critical two-tail2.100922045. Is there a significant difference between the two groups?6. Make a writeup of the result using APA format

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Answered: 2. A study was conducted to examine the…

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 veterinarian wants to perform a study at a local animal shelter where 200 dogs need training on behavior modification. The purpose of the study would be to determine if using a firm voice during training for 10 minutes improves a dog's learning behavior compared to not speaking during training for 10 minutes. Part A: Describe an appropriate design for the study. Part B: The hypotheses for this study are as follows: Ho: There is no difference in the mean improvement of dogs during behavior modification for either treatment. Ha: The mean improvement of dogs during behavior modification is greater for the firm voice treatment. The shelters will allow trainers to use a firm voice during training if the null hypothesis is rejected. What are the possible Type I and II errors? Describe the consequences of each in the context of this study and discuss which type you think is more serious.n
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8. A confidence interval for estimating the mean An industrial/organizational psychologist wants to improve worker productivity for a client firm, but first he needs to gain a better understanding of the life of the typical white-collar professional. Fortunately, he has access to the 2008 Workplace Productivity Survey, commissioned by LexisNexis and prepared by WorldOne Research, which surveyed a sample of 650 white-collar professionals (250 legal professionals and 400 other professionals). One of the survey questions was, “How many work-related emails do you receive during a typical workday?” For the subsample of legal professionals (n = 250), the mean response was M = 36.7 emails, with a sample standard deviation of s = 23.8 emails. The estimated standard error is sMM? = A-0.085, B-1.341, C-0.095 or D-1.505 (choices to choose from.) . Use the following Distributions tool to develop a 90% confidence interval estimate of the mean number of work-related emails legal…
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