Wallace asked 30 participants to report on their political affiliation bymarking "1" for liberal, "2" for conservative, and "3" for not interested inpolitics at all. Wallace then calculated from the data he obtained a meanof M = 2.1 for political affiliation in his sample. What one or more thingshas Wallace done wrong?He has calculated a meanusing too small of asample; this is not enoughto make any type ofestimate.He has used a measurethat is too reliable.He has forgotten to use thepopulation parameter in hiscalculation.He has calculated anaverage on nominal data,which does not makesense.NoOOYesO

Given that 30 participants For liberal 1 For conservative 2 For not interested in poltics at all…

Answered: Wallace asked 30 participants to report…

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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An instructor plots the grade distribution for a practice final exam and determines that the grades were negatively skewed. Based on this what would be your recommendation A. The entire class should have to attend additional practice tutoring sessions in order to bring up the average. B. Not enough information to make a recomendation, would need to know the average grade (mean). C. The mean was larger than the mode. D. The majority of the class did well on the exam.
Suppose the null hypothesis is rejected. State the conclusion based on the results of the test. Three years ago, the mean price of a single-family home was $243,704. A real estate broker believes that the mean price has decreased since then. Which of the following is the correct conclusion? O A. There is not sufficient evidence to conclude that the mean price of a single-family home has not changed. B. There is sufficient evidence to conclude that the mean price of a single-family home has decreased. C. There is sufficient evidence to conclude that the mean price of a single-family home has not changed. D. There is not sufficient evidence to conclude that the mean price of a single-family home has decreased.
In a city with three high schools, all the ninth graders took a Standardized Test, with these results: Highschool Mean score of test number of 9th grades Glenwood 81 275 Central City 95 338 Lincoln High 66 172 The city's PR manager, who never took statistics, claimed the mean score of all ninth graders in the city was 83 . 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 =
A sample of nine tourists indicated how much they spent on accommodation per night (in dollars) at a popular holiday destination. The amounts they paid for accommodation were as follows: 313.6 151.6 598.5 222.7 293.9 272.6 198.5 382.0 188.7 What is the difference between the median and the mean of the sample (correct to 2 decimal places)? Use (median - mean) as the order of the difference. P Note:- Do not provide handwritten solution. Maintain accuracy and quality in your answer. Take care of plagiarism. Answer completely. You will get up vote for sure.
B. Your process has a normal histogram with mean located at 10 mm, 1s points at 9.9 and 10.1 mm, 2s points at 9.8 and 10.2 mm, and 3s points at 9.7 and 10.3 mm. Construct a histogram and discuss the importance of sigma as a measure of variation.
In how many ways can 7 women and 7 men partner up for ballroom dancing, if each person has to dance with only one person of the opposite gender?
Hellen has just started a new years competition for her local climbing gym. There are two categories for this competition: singles and group (18 people). The rules are simple, put in the most hours in one months time and you get a guided tour to climb Ten Sleep canyon. She knows from running this competition over the years that the number of hours climbers at her gym spend training during this competiton is approximately normal and their mean competition hours per month in the gym are 24 hrs with a standard devaition of 6 hrs. Singles Distribution: X~N( , ) Group Distribution: x̄~N( , ) The winning single participant last year was in the 97 th percentile.... how many hours did the winner accumulate over the month? One of Hellan's friends Dave put in 27.12 hours on the wall. What is the probablity that another individual will beat his time? If someone puts in between 25.5-32.1 hours on the wall they get a Mountain Goat shirt. What percent of the singles competitors is expected to…
A group of students in experimental lab are wanting to see if the average psychology major at a university has the same level of psychological knowledge as the general population. They assess 31 psychology majors using an overall psychology assessment and calculate a mean score of 20.91 and a standard deviation of 1.63. They know the general population has a mean score on this test of 18.32. The students think that psychology majors will know more about psychology than the general population. Name the: 1) independent variable 2) scaling for independent variable 3) dependant variable 4) scaling for dependent variable Answer the following questions: 5) can random Selection be used, explain 6) can random assignment be used, explain 7) based on what you know what statistical test should the students use to examine their hypothesis? 8) why is that test most appropriate? 9) what are the assumptions of this test? 10) what is the Null and alternative hypothesis? 11) what is/are the…
On a verbal skill test, the mean was 72 and the standard deviation was 7. If John scored 75, what was his z-score?
Use the properties of the mean and median to determine which are the correct mean and median for the following histogram.
The sample data here is the cholesterol levels for 10 men diagnosed with high cholesterol. The first row represents levels from 10 men who did not use the drug and the second row from 10 different men who did use the drug. If we want to test the claim that the mean level for all men who use the drug is less than the mean for all men who do not use it, what is the appropriate alternative hypothesis? The mean cholesterol level of males who take the medicine is higher than the mean cholesterol levels of men who do not take it. There is a significant difference between males who use the medicine and men who do not use the drug in terms of mean cholesterol levels. The mean cholesterol level of males who take the medicine is lower than the mean cholesterol levels of men who do not take it. There is no significant difference between males who use the medicine and men who do not use the drug in terms of mean cholesterol levels.
Is what I have here already correct? And how should I word the second part of the of the question?

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