Some subscribers of a magazine that sells and reviews refrigerators respond to an annual questionnaire regarding their satisfaction with the newselection of refrigerators. The information obtained from these questionnaires is then used as a sample from which ratings are made by the magazine.Are the data obtained from these returned questionnaires representative of the entire population, or are they biased?Choose the correct answer below...OA. The data is biased because not all subscribers fill out the questionnaire.OB. The data is representative of the entire population because the participants of the sample are selected at randomOC. The data is biased because the source of the data comes only from people that subscribe to their magazine.tion33.jpgNextNextShow all

Our data for the population can only be unbiased when it is random because if there is nonrandomness…

Answered: Some subscribers of a magazine that…

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 survey was given to 18 students. One question asked about the one-way distance the student had to travel to attend college. The results, in miles, are shown in the following table. Use the median procedure for finding quartiles to find the first, second, and third quartiles for the data. Distance Traveled to Attend College 30 36 8 12 38 72 4 24 26 26 6 40 50 26 76 14 12 32 Q1 = Q2 = Q3 =
a survey was given to 18 students. one question asked about the one-way distance the student had to travel to attend college. the results, in miles, are shown in the following table. use the median procedure for finding quartiles to find the first, second and third quartiles for the data.
determine whether the samples are independent or dependant. To test the effectiveness of a drug, cholesterol level are measured in 60 men and 60 women after the treatment.
Find the mean, median and mode of the given sample. How would the mean, and median change if the highest salar is omitted? $250,00, $300,000, $350147, $232,425, $360,000, $1,231,421, $810,000, $229,000
The midterm and final exam grades for a statistics course are provided in the data set below. Jaymes, a student in the class, scored 86 on both exams. Treat the given data sets as samples. Midterm: 80, 78, 85, 82, 79, 79, 78, 86, 80, 84, 78, 84, 80, 84, 81, 78, 81, 82, 78, 84 Final: 81, 88, 68, 69, 69 81, 82, 86, 76, 71, 72, 68, 77, 86, 68, 83, 84, 71, 81, 87 z-score for midterm: 1.857 z-score for final: 1.181 Based on the z-scores calculated above, which of Jaymes's grades is more unusual, the midterm grade or the final exam grade? Select the correct answer below: A. The absolute value of the z-score for the final exam grade is greater than for the midterm grade, so the final exam grade is more unusual. B. The absolute value of the z-score for the midterm exam grade is less than for the final grade, so the midterm grade is more unusual. C. The absolute value of the z-score for the midterm exam grade is greater than for the final grade, so the midterm grade is more…
u refers to the population mean while x refers to the sample mean O A. True O B. False ts ft or 2
A student was interested in the cigarette-smoking habits of college students and collected data from an unbiased random sample of students. The data are summarized in the following table. Males who smoke Males who do not smoke Females who smoke Females who do not smoke What type of chart best represents the relative class frequencies? Multiple Choice Pie chart Box plot Frequency polygon 10 40 15 60 Scatterplot
I need help with 5 a,b,c
A sales manager recorded the number of sales made by each of the 300 salespeople working athis chain of furniture outlet stores on a Saturday and created the following table.# Sales (bins) Proportion of salespeople in this bin0 – 3 0.053 – 6 0.156 – 9 0.30 9 – 12 0.3512 -15 0.15a. What is the unit of observation in this sample?b. What is the variable collected?c. Draw and label the histogram for this dataset.d. Which is the modal category?e. Calculate the proportion of the salespeople made 9 or more sales.f. Calculate the number of salespeople who made between 0 and 9 sales.
For each problem, you must state the hypotheses, calculate the test statistic, and explain your decision. The following table reports the relationship between class standing and political orientation for a random sample of 267 college students. a. The table is constructed assuming that class standing is the independent variable. Please add %s in the appropriate position (columns or rows) to describe the pattern of the relationship. b. Is there a statistically significant relationship between these variables?
Marc takes a random sample of 14 dogs from the local animal shelter and weighs them. He obtains the following data: 9 25 32 40 41 45 47 50 53 53 62 79 94 106 What is the median for this data?
Which of the following is a sample and not a population? People who live in your town People who respond to a national survey Patients admitted to Roper Hospital during March of 2006 Sixth grade boys attending Mount Hope elementary school.

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