(c) A city manager wants to poll residents about a park renovation. Which of the following best describes a stratified sample of residents?The city manager forms 2 groups of residents based on the residents' incomes. Then, she selects 25 residents at random from each group.The city manager forms groups of 10 residents based on the streets the residents live on. Then, she selects all of the residents in 5 randomlychosen groups.The first 50 residents who walk into city hall one day are easily accessible. So, the city manager selects these residents.ExplanationCheck2021 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center | Accessibilia7:45 PM|耳Type here to search9/21/202110insern144&backsp7.EY.00L.%24 (a) A chemist at a pharmaceutical company wants to test the quality of a new batch of microscopes. Which of the following best describes a systematicsample of microscopes?The chemist assigns each microscope a different number. Using a random number table, he draws 72 of those numbers at random. Then, heselects the microscopes assigned to the drawn numbers. Every set of 72 microscopes is equally likely to be drawn using the random numbertable.The chemist forms 6 groups of microscopes based on the prices of the microscopes. Then, he selects 12 microscopes at random from eachgroup.The chemist takes a list of the microscopes and selects every 3 microscope until 72 microscopes are selected.3rd(An(b) A host on a cruise ship wants to collect data on the time passengers spend at various activities on board. Which of the following best describes aconvenience sample of passengers?The host takes a list of the passengers and selects every 4thpassenger until 80 passengers are selected.The host assigns each passenger a different number. Using a random number table, he draws 80 of those numbers at random. Then, he selectsthe passengers assigned to the drawn numbers. Every set of 80 passengers is equally likely to be drawn using the random number table.The host selects the first 80 passengers who board because these passengers are easily accessible.%3DExplanationCheck2021 McGraw Hill LLC All Rights Reserved.Terms of Use Privacy Center Accessibility7:45 PM9/21/2021耳Type here to searchnsert144JLpacksoace&7.8.3.41Y.U5.%24

Solution; When the population is not homogeneous, the entire population is divided into several…

Answered: (c) A city manager wants to poll…

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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ToysGalore is researching customers’ opinions about prices on their new doll. Name each sampling method. . A representative stands at the store entrance and polls the first 75 customers b. A representative asks every 8th customer who enters the store
3) A principal of a local high school wants to select 30 students from a student body of 600 students. He wants the proportion of students in each grade level to be the same in the sample as it is in the entire school. Describe how he could make a stratified sample if there are 100 freshmen, 160 sophomores, 200 juniors, and 140 seniors. Show all work. Write final answer in sentence form. o
The Ramapo College social media coordinator wants to create graduation videos to share on the College's social media account. She decides to randomly select 10 students from each of the 5 schools to feature during Arching and Graduation. What sampling method is the social media coordinator using? Group of answer choices Simple Random Sample Stratefied Sample Systematic Sample
Our local movie theater polls its customers about their favorite candy to eat during the movie. Name each sampling method described. a. Employees ask every 45th customer that purchases a movie ticket b. An employee divides the theater into sections: left, right, front, back. He/she randomly chooses a section and polls every customer within that section
Catherine Chao, Director of Marketing Research, needs a sample of households to participate in the testing of a new toothpaste package. She directs the seven members of her staff to find five households each. Catherine's sample is a cluster sample proportionate stratified sample quota sample disproportionate stratified sample simple random sample O O O
A political campaign wants to estimate the number of adult residents who voted in the last city election. Answer the following. (a) Which of the following surveys probably would best represent the entire adult population of the city? 50 senior residents are randomly selected; 42 voted in the last election. 50 adult residents are randomly selected from the city; 25 voted in the last election. 50 business owners are randomly selected; 38 voted in the last election. (b) There are 16,800 adults who live in the city. Using your answer from part (a), estimate the number of adults who voted in the last city election. adults
USA Today reported that about 20% of all people In the United States are Illiterate. Suppose you take eleven people at random off a city street. P USE SALT (a) Make a histogram showing the probability distribution of the number of illiterate people out of the eleven people in the sample. 0.30 0.30 0.25 0.25 0.20 0.20 0.15 0.15 0.10 0.10 0.05 0.05 2 3 4 5 7. 8 9 10 11 0 1 2 3 4 5 6 78 9 10 11 0.30 0.30 0.25 0.25 0.20 0.20 0.15 0.15 0.10 0.10 0.05 0.05 0. 0 1 2 3 4 5 6 7 8 9 10 11 0 1 2 3 45 6 7 8 9 10 11 (b) Find the mean and standard deviation of this probability distribution. (Round your standard deviation to two decimal places.) people people Find the expected number of people in this sample who are illiterate. people
A coach puts the names of all the basketball players into a hat and draws one name for a free basketball. Which sampling method is being used?
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