Question

The owner of a large company is conducting a survey about job satisfaction, including questions about salary, hours, stress, and other conditions. There are about eight hundred employees in the company, including one hundred executive positions, six hundred fifty middle-management positions, and fifty custodial positions. The owner wants to include about ten percent of his employees in the survey sample.

Identify a sampling method that might produce a biased sample. Explain why using the method for this survey would be a poor choice

Answer 1

@LaShaun97

Answer 2

@taystclair96

Answer 3

@.Sam. hurrp?

Answer 4

look it up online

Answer 5

not there

Answer 6

The sample should be drawn proportionally from all levels of the staff. It would be no good to sample a disproportionally large number of executives, for example - they might be happier with their jobs than the others (higher salaries, better benefits) or they might be less happy with their jobs than the others (stuck behind a desk all day, unhappy with corporate environment, etc). The same arguments against disproportional sampling could be applied to any of the other groups.

Answer 7

OMG THNAKS so much can you hlwp me on a few more

Answer 8

@Nurali

Answer 9

I thought I did that already xD sorry

Answer 10

The owner of a large company is conducting a survey about job satisfaction, including questions about salary, hours, stress, and other conditions. There are about eight hundred employees in the company, including one hundred executive positions, six hundred fifty middle-management positions, and fifty custodial positions. The owner wants to include about ten percent of his employees in the survey sample.

Identify a sampling method that would lead to a representative sample for the survey. Explain why it would be a good choice and give details about the process. @Nurali

Answer 11

800 employees, want to sample 10%, so the sample size will be 80.

You want a representative sample with the same proportion of workers as the whole population.

Take 10% of each of the different positions:

10% of 100 = 10 executives
10% of 650 = 65 middle managers
10% of 50 = 5 custodial workers

So pick 10 random executives, 65 random middle managers, and 5 random custodial workers. That way your sample is representative of the population.

Answer 12

The director of a children's ballet center is conducting surveys to get feedback about the classes. There are three types of classes, each for a particular age range: 3 through 5, 6 through 8, and 9 through twelve. What term can we use to describe all students in classes for 6 through 8 year olds?

experimental unit

population

sample

subgroup
@Nurali

Answer 13

i think subgroup.

Answer 14

A biologist is conducting research on four different types of fish found in a local lake. The numbers of each type are shown in the table.

A table shows the number of fish found in a location. There were ninety small-mouth bass found, two hundred eighty crappies found, sixty sunfish found, and one hundred twenty yellow perch found.

She plans to use a stratified sampling method in which twenty percent of the total population is included in the studies. How many yellow perch will be in her sample?

6

twelve

eighteen

twenty-four
@Nurali

Answer 15

the last one.

Answer 16

The principal at a school with eight hundred students is considering changes to the lunch menu. She wants to get the opinions of all of the students about their favorite menu items. So she asks the first 5 students who get off the bus in the morning. Which statement does not reflect the situation?

The sample is biased.

The principal collected a representative sample.

The sample size is too small.

The principal used convenience sampling
@Nu

Answer 17

the population is too small, it is convienence, and it is biased so the answer is B: The principal collected a representative sample.

Answer 18

Which of the following should not need to be considered when trying to ensure that a sample for a survey will be representative of the population?

guesses about survey results

make-up of the population

method of sampling

size of sample

Answer 19

make-up of the population

Answer 20

Bethany belongs to an outdoor club in her town. The members of the club are planning a community event for which they want to make T-shirts. The leader of the club takes a vote on the preferred color of the T-shirts. The results are shown in the table.

A table shows how many people preferred each color T-shirt. 5 people preferred white, 4 people preferred pink, 6 people preferred green, 2 people preferred black, and 3 people preferred red.

If all members of the club were included in the survey, which statement is a correct conclusion?

The club prefers white T-shirts.

1 out of 5 every club members prefers pink T-shirts.

Twenty percent of the club prefers black T-shirts.

Red is the least preferred T-shirt color.

Answer 21

The club prefers white T-shirts.

Answer 22

A neurobiologist is launching a nationwide professional study on the connection between text messaging and a particular type of brain function. The population of his study is twelve- to thirty-two-year-old people who text at least once a day. He wants to make sure that the whole range of ages is represented in the study. Which kind of sampling would provide the most reliable information for this study?

convenience sampling

simple random sampling

systematic sampling

volunteer sampling

Answer 23

this is the last one

Answer 24

systematic sample