Question

8 questions medal and follow

Answer 1

Question 1 (Essay Worth 4 points)

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.




Question 2 (Essay Worth 4 points)

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.




Question 3 (Multiple Choice Worth 2 points)

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

Question 4 (Multiple Choice Worth 2 points)

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

Question 5 (Multiple Choice Worth 2 points)

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.

Question 6 (Multiple Choice Worth 2 points)

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

Question 7 (Multiple Choice Worth 2 points)

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.

Question 8 (Multiple Choice Worth 2 points)

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

Answer 2

@AnswerMyQuestions @MelissaHolmes @moaayed99 @Hero @AravindG @unlockyourfuture

Answer 3

I just did this exam.

Answer 4

http://prntscr.com/3cnpjc
http://prntscr.com/3cnpjx
http://prntscr.com/3cnpk5
http://prntscr.com/3cnpkt
http://prntscr.com/3cnpl7
http://prntscr.com/3cnplz

Answer 5

thanks so much answer my question your dope as heck I was confuse on the first two so thanks very much

Answer 6

Lol this was 11 months ago.

Answer 7

I know :D but it is hard to find questions like this who give you a better understanding so thanks

Answer 8

:3

Answer 9

even though she has not graded yet :P