A sample of 70 students need to be selected from 500 freshmen from college of science to start thestudy. These freshmen are from three different department. Department of Mathematics andstatistics have 150 freshmen. Department of Biology have 250 and Department of Nutrition andDietetics have 100.a. What sampling technique we will use to choose the 70 students needed on the study?b. Solve the three strata.c. Suppose the researchers decided to down the sample to 50, how many freshmen will be needednow to the Department of Nutrition and Dietetics?

Answered: Image /qna-images/answer/650e1725-bafc-4a28-8bd1-0c80b23fe404.jpg

Answered: A sample of 70 students need to be…

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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Solve the following problems. Show your complete solution.
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.
Suppose a survey conducted in 2012 asked a group of adults from a certain country whether they drink seltzer water. Of the 3,062 people who responded, 22.8% said they drink seltzer water. Complete parts a through d. a. Identify the sample. What is the sample? A. The group of adults in the particular country who did not respond to the survey B. The 22.8% who reported they drink seltzer water C. The 3,062 people who responded D. All adults in the particular country b. Identify the population. What is the population? A. All of the adults in the world B. The 22.8% of respondents in the survey who reported they drink seltzer water C. All of the adults in the particular country D. The 3,062 people who responded to the survey
Identify the type of sample ( Experimental or Observational) Then tell if the sample is biased 5.The researcher stands at a shopping mall and selects the first 75 shoppers as they walk by to fill out a survey.
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 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
I can't understand why the data is the percentage of surveyed parents.
Determine the sample in this research scenario: Dr. Eglovitch wants to know whether type of exercise, running or yoga, improves post-partum depression. One hundred women are recruited from obstetricians’ offices in the Richmond area. Group of answer choices A.100 postpartum women whose depression was measured B.Type of exercise C. Postpartum depression D. All postpartum women
Please help explaining how to answer so I can study for my test. The Farm Program for the Montana State Department of Agriculture needs to choose a sample of farms in order to collect information about land utilization. Montana has 56 counties and the 26,800 farms across the state are currently categorized by county. The program would like to select a random sample of at least 112 farms and record the total acreage and the acreage used for pasture and range for each farm in the sample. Two plans have been proposed: Plan A: The program will randomly select 10 counties from the 56 counties. All farms within the 10 selected counties will be visited by a surveyor who will calculate the total acreage and acreage used for pasture and range. Plan B: The program will randomly select 2 farms from each county. All 112 selected farms will be visited by a surveyor who will calculate the total acreage and acreage used for pasture and range. Which of the following best describes the…
According to US Census data for 2010 the percentage of Americans in living in Urban areas was approximately 80.7%. Apply this percentage to both the 2000 and 2012 total sample size and estimate the number of Urban respondents in each survey. For 2000 number of population is 43093 and 2012 is 36309..
Identify the type of sample ( Experimental or Observational) Then tell if the sample is biased 5. A researcher wants to select ten students for a survey. Each student’s name is placed in a hat and 10 names are selected.
A statistics teacher asked two different students, Lexie and Jennifer, to go to Wegmans and sample 30 shoppers each. The population of interest for both people can be defined as, “People who shop at the Johnson City, NY Wegmans store”. Here is what each person did to collect their sample: Lexie: She stood outside at the entrance to the store on 3 different days and times and surveyed every 15th person to walk by her. She surveyed 10 people each time to get her 30. Jennifer: She went to Wegmans after her nursing shift first thing Wednesday morning to buy deodorant since she ran out. When she was in the pharmacy area she surveyed all the people around her and then, to get up to 30 surveys, she went to the health food section and surveyed everyone she was there. Identify at least 2 specific reasons why Lexie’s approach is more likely to give a representative sample. Consider sources of bias, or types of shoppers who might be excluded by Jennifer’s approach.…

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