A social psychologist recently developed a childhood-memories test that is intended tomeasure how people recall pleasant and unpleasant experiences from childhood. Scoreson the test range from 1 (very unpleasant) to 100 (very pleasant). The psychologiststandardized the test with a large group of college students (ages 18-25), and the meanscore was p=60. The test was then given to a sample of n=25 individuals who were allbetween the ages of 40 and 45. The average score for this sample was 64.3 with SS (sumof squares)=600. Note: S?=SS÷df (variance is equal to sum of squares divided by thedegrees of freedom). What is your standard deviation?Answer:

The random variable score follows normal distribution. We have to find the value of the standard…

Answered: A social psychologist recently…

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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In the class poll from the beginning of the year, you were asked what color car you drive. The results are summarized below. aqua 3 beige/tan/gold 39 black 80 blue 44 green 21 orange 3 pink 1 purple 3 red 45 silver 63 white 74 yellow 1 What is the mode for this data set?
Which statistic would you use if you are interested in comparing the mean number of hours worked by sex.
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A social psychologist recently developed a childhood-memories test that is intended to measure how people recall pleasant and unpleasant experiences from childhood. Scores on the test range from 1 (very unpleasant) to 100 (very pleasant). The psychologist standardized the test with a large group of college students (ages 18-25), and the mean score was p=60. The test was then given to a sample of n=25 individuals who were all between the ages of 40 and 45. The average score for this sample was 64.3 with SS (sum of squares)=600. Note: S?=SS÷df (variance is equal to sum of squares divided by the degrees of freedom). What is your conclusion if you were to test the hypothesis using one- tailed test at a=0.05? O a. Reject the null hypothesis O b. Fail to reject the null hypothesis O c. Accept the null hypothesis O d. None of the above
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A social psychologist recently developed a childhood-memories test that is intended to measure how people recall pleasant and unpleasant experiences from childhood. Scores on the test range from 1 (very unpleasant) to 100 (very pleasant). The psychologist standardized the test with a large group of college students (ages 18-25), and the mean score was p=60. The test was then given to a sample of n=25 individuals who were all between the ages of 40 and 45. The average score for this sample was 64.3 with SS (sum of squares)=600. Note: S?=SS÷df (variance is equal to sum of squares divided by the degrees of freedom). If you were to test the hypothesis using one-tailed test at a=0.05, what is the difference between group of scores using Cohen's d? O a. medium O b. small O c. large O d. none at all
One personality test available on the World Wide Web has a subsection designed to assess the "honesty" of the test-taker. You are interested in the mean score, μ, among the general population on this subsection. The website reports that u is 148, but you have good reason to believe that u differs from 148. You decide to do a statistical test. You choose a random sample of people and have them take the personality test. You find that their mean score on the subsection is 155 and that the standard deviation of their scores is 22. Based on this information, complete the parts below. (a) What are the null hypothesis Ho and the alternative hypothesis H, that should be used for the test? H:0 H₁ :0 (b) Suppose that you decide to reject the null hypothesis. What sort of error might you be making? (Choose one) ▼ (c) Suppose the true mean score among the general population on the subsection is 148. Fill in the blanks to describe a Type I error. A Type I error would be (Choose one) when, in fact,…
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In a city with three high schools, all the ninth graders took a Standardized Test, with these results: Mean High Number of ninth Test School graders (Frequency) Score Glenwood 83 263 Central 94 323 Lincoln 70 184 The city's PR manager, who never took statistics, claimed the mean score of all ninth graders in the city was the average of 83, 94, and 70, which is 82.3. Of course, that is incorrect. What is the mean score for all ninth graders in the city? Round to one decimal place. Mean of all ninth grader's scores =
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