(a)A manager at a bus company wants to survey employees about the new uniforms. Which of the following best describes a random sample of employees?The manager asks for volunteers and selects every volunteer until 60 employees are selected. She selects the volunteers because these employees are easily accessible.The manager forms groups of 12 employees based on the departments the employees are in. Then, she selects all of the employees in 5 randomly chosen groups.The manager uses a computer program to draw 60 employees at random and selects these employees. Every set of 60 employees is equally likely to be drawn by the computer program.(b)A consultant wants to ask workers at a factory about the workers' job satisfaction. Which of the following best describes a stratified sample of workers?The consultant forms groups of 8 workers based on the lengths of time the workers have worked at the factory. Then, he randomly chooses 9 groups and selects all of the workers in these groups.The consultant assigns each worker a different number. Using a random number table, he draws 72 of those numbers at random. Then, the consultant selects the workers assigned to the drawn numbers. Every set of 72 workers is equally likely to be drawn using the random number table.The consultant forms 6 groups of workers based on the workers' shifts. Then, he selects 12 workers at random from each group.(c)A city manager wants to poll residents about a park renovation. Which of the following best describes a convenience sample of residents?The city manager takes a list of the residents and selects every 5th resident until 90 residents are selected.The first 90 residents who walk into city hall one day are easily accessible. So, the city manager selects these residents.The city manager forms 5 groups of residents based on the residents' incomes. Then, she selects 18 residents at random from each group.

(a)The organizers of a conference want to survey attendees about the registration fee. Which of the following best describes a systematic sample of attendees?The organizers assign each attendee a different number. Using a random number table, the organizers draw 50 of those numbers at random. Then, the organizers select the attendees assigned to the drawn numbers. Every set of 50 attendees is equally likely to be drawn using the random number table.The organizers form 2 groups of attendees based on the attendees' employment statuses. Then, the organizers select 25 attendees at random from each group.The organizers take a list of the attendees and select every 5th attendee until 50 attendees are selected.(b)A chemist at a pharmaceutical company wants to test the quality of a new batch of microscopes. Which of the following best describes a convenience sample of microscopes?The chemist takes a list of the microscopes and selects every 3rd microscope until 72 microscopes are selected.The microscopes in the first shipment that was received are easily accessible. So, he selects all 72 of the microscopes in this shipment.The chemist assigns each microscope a different number. Using a random number table, he draws 72 of those numbers at random. Then, he selects the microscopes assigned to the drawn numbers. Every set of 72 microscopes is equally likely to be drawn using the random number table.(c)Counselors at a college want to poll students about how much time the students spend studying. Which of the following best describes a stratified sample of students?The counselors form 4 groups of students based on the numbers of classes the students are taking. Then, the counselors select 16 students at random from each group.The counselors form groups of 8 students based on the students' majors. Then, the counselors select all of the students in 8 randomly chosen groups.The students living in a particular dorm building on campus are easily accessible. So, the counselors select the 64 students living in that particular dorm building.

Directions: Identify which type of sampling is used: random, stratified, cluster,systematic or convenience. Write the answer on the space before each number.__________ 1. An interviewer selects 5 males and 5 females from each of 4 thegroups.__________ 2. A psychologist surveys all students from each of 20 randomly selectedclasses.__________ 3. The organizer writes the name of each participant on a separatesheet. He shuffles the sheets, and draws 10 names.__________ 4. Smart selects 50th cell phone from the assembly line and conduct athorough test of quality.__________ 5. When a principal made an important announcement, he basedconclusion on 1 000 responses from 10 000 questionnairesdistributed to students.

A manager associated each employee's name with a number on one ball in a container, then drew balls without looking to select a sample of   employees.What type of sample is this?Choose 1 answer:Choose 1 answer:(Choice A)   Simple random sampleASimple random sample(Choice B)   Stratified random sampleBStratified random sample(Choice C)   Cluster random sampleCCluster random sample(Choice D)   Systematic random sampleDSystematic random sample(Choice E)   None of the aboveENone of the above

A large bakery mass produces cakes on an assembly line. Each shift, a quality control expert randomly selects one of the first ten finished cakes, and every tenth cake thereafter. Employees weigh those cakes and give the cakes a detailed visual check.What type of sample is this?Choose 1 answer:Choose 1 answer:(Choice A)   Simple random sampleASimple random sample(Choice B)   Stratified random sampleBStratified random sample(Choice C)   Cluster random sampleCCluster random sample(Choice D)   Systematic random sampleDSystematic random sample(Choice E)   None of the aboveENone of the above

For the following, identify which type of sampling technique was used.To obtain a sample of the employees at a social media marketing company, 100 employees are randomly selected from a numbered list of the 1000 employees.