Suppose if an introductory statistics textbook was given to all potential readers for review in 1-to-5 starsrating system, with 5 stars being the best, the population distribution of the ratings would be as follows:50% of the readers give 5 stars, 25% give 4 stars, 25% of the readers give 2 stars.Of course it is impossible to ask all potential readers to rate the textbook. So the book seller samples potentialreaders from the population and ask them to rate the book.The following graphs arc●●(1) Histogram of the ratings given by all potential readers(2) Histogram of the ratings given by 100 randomly sampled readers(3) Histogram of 5000 sample means of the ratings from random samples of each size 10(4) Histogram of 5000 sample means of the ratings from random samples of each size 1001AT2 3 45B3.6 3.8 4.0 4.2 4.4TTT1 2 3T415Determine which graph (A, B, C, or D) is which and explain your reasoning.T2.5 3.0 3.5 4.0 4.5 5.0

The population distribution of ratings is as shown below: 50% of the readers give 5 stars. 25% of…

Answered: Suppose if an introductory statistics…

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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We want to investigate the average study time per day of School students. The official number of School students is 20,000. We have collected data using the actual contact number of School students. It contains individual-level information on the study hours per day. The number of observations in a data set is 20,000. The same person has not been collected more than once in this data. According to this data, the average study time per day of School students is 3 hours and 20 minutes. 1.what's unique about this data 2.how do you perform your own hypothesis test using this data?
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A psychologist wanted to examine whether regular mindfulness practice would have an effect on the anxiety levels of her clients. She randomly assigned her clients into two groups. She asked the first group to meditate every day for 15 minutes for 6 months in addition to their regular counseling sessions. In the second group, she continued her regular counseling sessions without any extra treatment. Since the psychologist does not know how to run the analysis, your task is, by using your statistics skills, to inform her whether the mindfulness practice has made a difference in the lives of her clients and in what sense. To provide her with an answer, I want you to run two different tests: An Independent Samples t-test and a One-Way ANOVA, report their results, and compare the findings of these two analyses.
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