Think of all employees at a company as a population of interest. All employees are emailed a link to a survey and it up to them whether they choose to respond. We can consider the employees that respond to the survey a random sample. True or false? Question 9Select one:TrueFalse

The faculty senate at a large university wanted to know what proportion of the students thought foreign language classes should be required for everyone. The statistics department offered to cooperate in conducting a survey, and a simple random sample of 500 students was selected from all the students enrolled in statistics classes. A survey form was sent by email to these 500 students.True or false? Since the sample is random, it is representative of the population of interest. True False

(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.

When conducting a survey, which of the following is the most important reason to use a random sample? To avoid bias and to get a representative sample To get a significant result To ensure truthful answers to the survey's questions So that we can make causal conclusions

A large company surveys 100 employees by taking random samples of 10 managers and 90 non-managerial employees.

What is the importance of random sampling in survey research? Question 11Answera.To ensure that survey results accurately reflect the population as a whole without introducing systematic bias.b.To ascertain the level of truthfulness and accuracy subjects use in answering survey questions.c.To ensure that the demographic and demand characteristics of the population to be studied are represented.d.To limit the amount of respondents to a manageable sample size so correlational research is possible.