The nonprofit group Public Agenda conducted telephone interviews with three randomly selectedgroups of parents of high-school children. There were 202 black parents, 202 Hispanic parents, and201 white parents. The sample survey asked the parents to respond to the statement, "A collegeeducation has become as important as a high school diploma used to be." Here are the counts ofresponses:Strongly agreeSomewhat agreeSomewhat disagreeStrongly disagreeTOTALBlackparents154271110202Hispanic Whiteparents14437138202parents12550188201Write a brief report on the similarities or differences among the three groups of parents in theirattitudes towards the importance of a college education. Include a graph or graphs and a test ofsignificance.

A telephonic survey is conducted and three randomly selected groups of high school parents…

Answered: The nonprofit group Public Agenda…

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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he city of Raleigh has 7000 registered voters. There are two candidates for city council in an upcoming election: Brown and Feliz. The day before the election, a telephone poll of 400 randomly selected registered voters was conducted. 131 said they'd vote for Brown, 259 said they'd vote for Feliz, and 10 were undecided.Give the sample statistic for the proportion of voters surveyed who said they'd vote for Brown. Note: The proportion should be a fraction or decimal, not a percent. This sample statistic suggests that we might expect of the 7000 registered voters to vote for Brown.
James believes the honor roll students at his school have an unfair advantage in being assigned to the math class they request. He asked 500 students at his school the following questions: "Are you on the honor roll?" and "Did you get the math class you requested?" The results are shown in the table below: Honor roll Not on honor roll Total Received math class requested 315 64 379 Did not get math class requested 41 80 121 Total 356 144 500 Calculate P(received math class requested|Honor roll) and evaluate whether the two events appear independent. p = 0.885; the events are independent because a student can be on the honor roll and receive the math class requested p = 0.630; the events are not independent because the probability of any student receiving the class requested is 0.758 p = 0.885; the events are not independent because the probability of any student receiving the class requested is 0.758 p = 0.630; the events are independent because a student can be on…
Researchers wanted to determine if there was an association between daily cantaloupe consumption and the occurrence of colon cancer. The researchers looked at 93,417 women and asked them to report their cantaloupe-eating habits. The researchers also determined which of the women had adenocarcinoma. After their analysis, the researchers concluded that consumption of two or more servings of cantaloupe per day was associated with a reduction in adenocarcinoma Complete parts (a) through (c) below. (a) What type of observational study was this? Explain. O A. This was a cohort study because it identified a group of individuals to participate in the study and observed the group over a long period of time. O B. This was a cross-sectional study because all information about the individuals was collected at a specific point time O C. This was a case-control study because individuals that had a certain characteristic were matched with those that did not. (b) What is the response variable in the…
C. In a sample of 993 recent car buyers, the participants are asked to identify the most useful source of information about the cars they purchase. The responses and their frequencies are listed in the table. Frequency Source Consumer guide Dealership 78 279 120 Word of mouth Internet 516 Based on this sample data, what percentage of car buyers have found either a dealership or the internet as the most useful source of information about the cars they purchase?
Each accountant at a large accounting firm was classified according to accountant level (junior or senior) and method of transportation to work (walk, bus, drive alone, or carpool). The responses of the 320 accountants at the firm are summarized in the table. Junior Senior Total Walk 25 3 28 Bus 87 12 99 Drive alone 96 25 121 Carpool 52 20 72 Total 260 60 320 What proportion of the accountants at the firm are at the senior level and carpool to work? 20 (A) 60 20 (B) 72 (C) 20 320 112 (D) 320 132 (E) 320
The city council of Pine Bluffs is considering increasing the number of police in an effort to reduce crime. Before making a final decision, the council asked the chief of police to survey other cities of similar size to determine the relationship between the number of police and the number of crimes reported. The chief gathered the following sample information. City Oxford Starksville Danville Athens ……….... Police 23 24 30 33 Number of Crimes 18 15 Click here for the Excel Data File 9 11 Number of crimes City Holgate Carey Whistler Woodville > Answer is complete but not entirely correct. 40.6081 X (90.0408) ► x Answer is complete and correct. 19✔ Police 24 20 19 27 a. Determine the regression equation. (Negative amounts should be indicated by a minus sign. Round your answers to 4 decimal places.) Number of Crimes 9 22 24 10 b. Estimate the number of crimes for a city with 21 police officers. (Round your answer to the nearest whole number.)
Select the correct response. For a research study, there are five options for the first question, four options for the second question, and three options for the third question. Using a list, there would be outcomes for the sample space. For a similar study, if there are only four options for the first question, the sample space would have outcomes.
Readers of the magazine Popular Science (August 1990) were asked to phone in (on a 900 number) their responses to the following question: “Should the United States build more fossil-fuel generating plants or the new so-called safe nuclear generators to meet the energy crisis of the 90s?” Of the total call-ins, 86% chose the nuclear option. What do you think about the way the poll was conducted? What do you think about the way the question was worded? Do you think the results are a good estimate of the prevailing mood of the country?
Dr. A. Ventura is interested in determining what kinds and how many pets people own in Bakersfield. He stands outside Petco and asks people what kind of pet they own. This is the result of his survey: dog=1; cat=2; bird=3; reptile=4; fish=5; other=6 1,1,2,2,2,1,1,3,2,3,1,1,1,2,2,4,4,2,2,1,1,1,5,4,3,4,1,1,1,2,2,6,1,1,2,2,1,2,1,2,6,3,4,5
A professor wanted to study the number of hours statistics students spend studyingstatistics each week. Out of 19 statistics sections at Santa Ana College, the professorsurveyed each student from 3 randomly selected sections. What is the largest group ofstudents the results of this study can represent?a. All Santa Ana College studentsb. All Santa Ana College students taking a math classc. All Santa Ana College students taking a statistics classd. Students in the three sections the professor surveyed
If there are 11 people in the first sample and 10 people in the second sample, the degrees of freedom for the first sample is type your answer... and type your answer... for the second sample.
A group of 499 students were surveyed about the courses they were taking at their college with the following results:228 students said they were taking Math.213 students said they were taking English.237 students said they were taking History.61 students said they were taking Math and English.84 students said they were taking Math and History.74 students said they were taking English and History.17 students said they were taking all three courses.How many students took Math, English, or History ?

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