QUESTION 11You hypothesize that people in stats classes are happier than people in all other classes. You compare happiness scores in three ofyour classes: Statistics, Developmental Psychology, and Social Psychology. In Statistics there are 15 students and the mean happinessrating is 23.1 with a standard deviation of 9.78. In Developmental Psychology there are 15 students and the mean happiness rating is24.4 with a standard deviation of 2.92. In Social Psychology there are 15 students with a mean rating of 17.7 and standard deviation of8.46. The sum of squares between groups is equal to 384. The sum of squares within groups is equal to 2461.What is the F-ratio? Round to the nearest hundredths place (two decimal places).

You compare happiness scores in three of your classes: In Statistics there are 15 students and the…

Answered: ze that people in stats classes are…

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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Database A contains 40 data items and is made up with an equal number of the values of 0 and 100 and has a mean of 50. Database B also has 40 entries made up equally of the values 49 and51 and also has a mean of 50. Which database will have the smaller value for its standard deviation?
You will be comparing two sets of data for this assignment. 1. Determine the average number of toilet paper rolls* for Fall 2022 biochemistry and genetics students (individually) and calculate the standard deviation of each using the equation. Please be sure to show your work. I know that you can easily use tools like Microsoft Excel to calculate standard deviation, but I would like to see you complete the work by hand so that you get a sense of the role of each component of the equation. Ignore students that did not provide answers (don't use those students in the mean or N value calculations). 2. Please answer the following questions when you submit your data. Which group had a higher mean number of rolls of toilet paper? Which value had the most variability? Referring to the equation, how could you decrease the amount of variability in the mean? Did you find the variation surprising or unexpected? The two sets of data and the standard deviation formula pictures are attached…
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I need help solving this statistics problem.
If the mean of the data is 130 with a standard deviation of 10, what percent of the data falls between the values of 100 and 160?
True or false. If the standard deviation of a dataset is 0, the mean must also be 0.
Rebecca and Emma began arguing about who did better on their tests, but they couldn't decide who did better given that they took different tests. Rebecca took a test in English and earned a 71, and Emma took a test in Social Studies and earned a 70.4. Use the fact that all the students' test grades in the English class had a mean of 71.5 and a standard deviation of 10.7, and all the students' test grades in Social Studies had a mean of 64.1 and a standard deviation of 9.5 to answer the following questions. a) Calculate the z-score for Rebecca's test grade. b) Calculate the z-score for Emma's test grade. = Z c) Which person did relatively better? Rebecca O Emma O They did equally well.
When you have significant results in data analysis, it is customary to report all relevant means and standard deviations. True or false

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