2. A researcher would like to determine the political preference of the nationbefore the upcoming midterm elections. From where should the researchercollect his/her data?A. From all the voting population in the nation.B. From a sample of people living in one region.C. From a sample of people randomly chosen across the nation.D. From all the people in a randomly selected region.

Sampling: It is a process of selection of items/objects in a random way from a population. The…

Answered: 2. A researcher would like to determine…

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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I have a group with 6 members from my family.I've weight 52 kg,my father weight 63 kg,my younger brother weight 35 kg,my cousin weight 38 kg,my uncle weight 72 kg. and my eldest brother weight 55 kg.Consider samples of size 4 that can be drawin from this population. Answer the following questions:(Answer number 1,2 and 3) 1.How many possible samples can be drawn?2.List all possible samples and the corresponding means.3.Construct the sampling distribution of the sample means.
A polling organization contacts 1581 teenagers who are 16 to 19 years of age and live in North America and ask whether or not they had driven a car on a highway recently. What is the population in the study? A. Teenagers who are 16 to 19 years of age B. Teenagers who are 16 to 19 years of age and live in North America C. Teenagers who are 16 to 19 years of age and have driven a car in a highway D. Teenagers who are 16 to 19 years of age and live in North America and driven a car in a highway What is the sample in the study? A. Teenagers who are 16 to 19 years of age and live in North America B. The 1581 who are 16 to 19 years of age and have driven a car in the highway C.The 1581 who are 16 to 19 years of age and live in North America D. The 1581 who are 16 to 19 years of age
1. Mark 30 small pieces of paper with an A, a B, or a C. Put the pieces of paper in a bag. Trade bags with other students in the class. a. Generate a sample by choosing a piece of paper from your bag 10 times, replacing the piece of paper each time. Record the number of times you choose each letter. Repeat this process to generate five more samples. b. Use each sample to make an estimate for the number of As and Bs in the bag. Then describe the variation of the six estimates. Make estimates for the numbers of As, Bs, and Cs in the bag based on all the samples. c. Take the pieces of paper out of the bag. How do your estimates compare to the population? Do you think you can make a more accurate estimate? If so, explain how.
A club wants to sponsor a panel discussion on an upcoming election. The club wants to have four of its members lead the panel discussion. To be fair, however, the panel should consist of two members of each party. Below is a list of members in each party. Obtain a stratified sample of two people from party 1 and two from party 2. Which of the following is a possible list of club members to lead the panel discussion? A. May, Engler, Ochs, Haydra B. Haydra, Tate, May, Engler C. May, Engler, Ochs, Cooper Party 1 Nolan Party 2 Ochs D. Haydra, Tate, Carter, May Bolden Сооper Engler Keating | May Carter Pawlak Rice E. Haydra, Tate, Carter, Pawlak Нaydra Tate Thomas Lukens Wright Weber
After once again losing a hockey game to the Michigan Tech,the alumini association of NMU conducted a survey to see if alumini were in favour of firing the coach.A simple random sample of 100 alumini from the population of all living alumini was taken .Sixty-four of the alumini in the sample were in favour of firing the coach.Let p represent the proportion of all living alumini who favor firing the coach. what is a 99% confidence interval for p?
1 The Blue Tide High School Student Committee has 5 members. They would like to conduct a survey to get the students’ opinion on the school’s new bell schedule. They asked 23 students’ representatives to distribute a questionnaire to the schools’ 1550 students. In the end, they received 750 responses. They wrote a report based on the information provided by the respondents. 2) which number represents the size of the sample?
10. For adults, certain type of cancers can be treated with multiple health interventions. To gain information about all Maryland-based treatment centers a survey is sent to a randomly chosen group of 25 Maryland based treatment centers that asks about the recommended interventions for cancer patients based on medical records, insurance, and income. All of the randomly selected treatment centers completed the survey. The sample is: For adults, certain type of cancers can be treated with multiple health interventions. To gain information about all Maryland-based treatment centers a survey is sent to a randomly chosen group of 25 Maryland based treatment centers that asks about the recommended interventions for cancer patients based on medical records, insurance, and income. All of the randomly selected treatment centers completed the survey. The sample is: a. the 25 Maryland-based treatment centers b. the medical records, insurance, and income c. all Maryland-based treatment…
Please list your answers to part a, b, c, and d. Suppose you try to conduct a presidential approval poll of 5,000 likely U.S. voters. You know that 29% of the voters are registered as Republican, 34% are registered as Democrat, and 28% are registered as Independent. If you are going to construct a representative sample of this population, approximately how many of the likely voters in the sample should be: a. Republican b. Democrat c. Independent d. Notice the sum of the percents is not 100. What could account for this?

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