Of the students who eat in a certain cafeteria gmat


Asked by wiki @ in Mathematics viewed by 167 People


In a certain school, students can choose whether to eat in the school’s cafeteria. A reporter working for the school’s newspaper polled students on their reactions to changes in the menu at the cafeteria. For each student leaving the cafeteria in one 30-minute time period, the reporter used a coin to determine whether to stop the student and ask how he or she felt about the new menu. In the reporter’s article it was stated that a random sample of the students showed that 89 percent of the school’s student population was happy with the new menu. Which of the following statements is true?

A.Because each student leaving the cafeteria was randomly selected and could choose to answer or not, this is a random sample of the student population, and the 89% is an accurate measurement of the school population’s view of the new menu.
B. Because students self-selected whether to eat in the cafeteria, the sampling method might be biased and the sample might not be representative of all students in the school.
C. The survey would have been more effective if the reporter had collected the data in one 15-minute time period rather than in one 30-minute time period.
D. The survey would have been more effective if students who cared about the food could have called the reporter to tell how they felt about the new menu, so that only students with opinions on the subject would have been surveyed.
E. Because no treatment was imposed on the students eating in the cafeteria, one cannot make any conclusions about the new menu.

Answered by wiki @



Answer:

The statement that is true is B. Because students self-selected whether to eat in the cafeteria, the sampling method might be biased and the sample might not be representative of all students in the school.

Step-by-step explanation:

Because of students can decide if they eat in the cafeteria or not, the sample obtained by the reporter can be extrapolated only to the population of students that actually eat in the cafeteria, not to all students population. To make a conclusion of the degree of conformity of all students population, the poll should have been conducted in a hallway of the school (to get the opinion of all students, not only the ones that go to the cafeteria). In other way, the reporter are loosing the opinion of those students that are not happy with the new menu, and decide not going to the cafeteria.  


Do you know the better answer?

Similar Questions

In a chemical equation numbers in front of chemical formulas

Asked by wiki @ in Chemistry viewed by 140 persons

The number placed in front of a formula is called a coefficient. the small number within a chemical equation formula is called a subscript. why do we adjust coefficients when …

How many miles per hour is the speed of sound

Asked by wiki @ in Chemistry viewed by 195 persons

The speed of the sound in air at room temperature is 343 m/s. Calculate this speed in miles per hour.

Serve as the intermediary between the user and the database

Asked by wiki @ in Computers and Technology viewed by 165 persons

A ________ is a collection of forms, reports, queries, and programs that serves as an intermediary between users and database data. science forums

How to find how many real solutions an equation has

Asked by wiki @ in Mathematics viewed by 177 persons

21 points!!Determine the number of real solutions each quadratic equation has. Answer with either no, one, or two. 1.) y = 12x^2 - 9x + 4 has _ real solution(s) …

How is an investment bank different from a commercial bank

Asked by wiki @ in Mathematics viewed by 193 persons

How is an investment bank different from a commercial bank

What is the most important thing to consider when writing

Asked by wiki @ in English viewed by 65 persons

What is the most important thing to consider when writing? A)making it reader-friendly B)your audience C)length requirement D)theme you want to convey

What is a cost of using technology to transport water

Asked by wiki @ in Biology viewed by 77 persons

What is a cost of using technology to transport water? A. Crops can be irrigated and grown in new areas. B. Cities can be built in otherwise uninhabitable areas. C. …

The origins of the rectus abdominus muscle are on the

Asked by wiki @ in Biology viewed by 89 persons

The origins of the rectus abdominus muscle are on the __________. The origins of the rectus abdominus muscle are on the __________. pubic bone ileum bone sacral bone ischial bone

Which of the following is true about an ionic compound

Asked by wiki @ in Chemistry viewed by 217 persons

Which of the following is true about an ionic compound? A. it is salt. B. It is held together by ionic bonds. C. It is composed of anions and cations. …

How old was she when she won the nobel prize

Asked by wiki @ in Spanish viewed by 175 persons

How old was she when she won the Nobel Prize?

What did the soil conservation act of 1935 call for

Asked by wiki @ in History viewed by 175 persons

What did the Soil Conservation Act of 1935 call for? A. Land-use practices that would reduce erosion B. National soil- and water-conservation program C. National air-quality standards D. Water-quality standards …

Unit 8 right triangles and trigonometry homework 3 answers key

Asked by wiki @ in Mathematics viewed by 598 persons

Unit 8: Right Triangles & Trigonometry Homework 3

Can you correctly label various parts of a dna molecule

Asked by wiki @ in Biology viewed by 180 persons

Can someone please draw me a DNA model then label each material and the part of the DNA molecule it represents!?

Which of the following is an example of chemical change

Asked by wiki @ in Biology viewed by 239 persons

Which of the following is an example of a chemical change

Why did the partition of africa create artificial boundaries

Asked by wiki @ in History viewed by 225 persons

Why did the partition of Africa create artificial boundaries? Europeans ignored traditional boundaries when they carved out their colonies. Europeans agreed that their colonies all had to be roughly the …

Who is the author of the ransom of red chief

Asked by wiki @ in English viewed by 152 persons

Who wrote The Ransom Of Red Chief?

How many miles of the nile are actually in egypt

Asked by wiki @ in Social Studies viewed by 157 persons

About how many miles of the Nile are actually in Egypt

Which of the following statements are true of literal equations

Asked by wiki @ in Mathematics viewed by 141 persons

Which of the following statements are true of literal equations? (mofre than 1 answer) They consist primarily of variables. They are often called formulas. They mostly use words. They often …

What political circumstances in europe led to world war 1

Asked by wiki @ in History viewed by 168 persons

What political circumstances in Europe led to world war 1

True or false conversion optimization is not an iterative process

Asked by wiki @ in Business viewed by 138 persons

True or false? conversion optimization is not an iterative process.

Although all elements comprising a hazard warning label are important

Asked by wiki @ in Biology viewed by 127 persons

Although all elements comprising a hazard warning label are important, the least important element is the label's _____.

After suffering a brain injury in a motorcycle accident arotza

Asked by wiki @ in Social Studies viewed by 309 persons

Fter suffering a brain injury in a motorcycle accident. arotza cannot form new memories. he can, however, remember events before the accident. arotza's memory difficulty most clearly illustrates:

How can dna microarrays help researchers learn more about cancer

Asked by wiki @ in Biology viewed by 148 persons

What information could cancer researchers gain from using DNA microarrays?

How are the vacuoles different in plant and animal cells

Asked by wiki @ in Biology viewed by 181 persons

How are the vacuoles different in plant and animal cells

What's the conversion factor used to convert inches to yards

Asked by wiki @ in Mathematics viewed by 188 persons

What's the conversion factor used to convert inches to yards? A. 12 inches in 1 yard B. 36 inches in 1 yard C. 3 inches in 1 yard D. 24 …

Which of the following is true of the neuroscience perspective

Asked by wiki @ in Social Studies viewed by 66 persons

Which of the following is true of neuroscience as a contemporary approach to psychology? Group of answer choices It focuses on natural selection as the method of evolution for any …

Which form of bacteria is matched correctly to its description

Asked by wiki @ in Biology viewed by 247 persons

Which form of bacteria is matched correctly to its description? spirillum—has a rod shape and exists in chains or alone coccus—can cause MRSA and has a round shape coccus—can cause …

Match each type of cell to its primary specialized function

Asked by wiki @ in Biology viewed by 305 persons

Match each type of specialized cell to its functions. muscle cells carry oxygen throughout the body, against pathogens neurons conduct electrical impulses; allow b react to stimuli epithelial cells regulate …

A small business can thrive even in a bad economy

Asked by wiki @ in Business viewed by 145 persons

A small business can thrive, even in a bad economy. True False

What do you call the answer to a division problem

Asked by wiki @ in Mathematics viewed by 165 persons

What is the answer of a multiplication problem called What is the answer of a division problem called

Most viewed questions in Mathematics


Gina wilson all things algebra 2015 answer key unit 11

Asked by wiki @ in Mathematics viewed by 5162 persons


Unit 11 volume and surface area homework 3 answer key

Asked by wiki @ in Mathematics viewed by 4521 persons


3.2 puzzle time what is roz savage famous for answers

Asked by wiki @ in Mathematics viewed by 3717 persons



An artist sells a painting for 20.50 but uses 5.75

Asked by wiki @ in Mathematics viewed by 3218 persons


Gina wilson all things algebra 2016 answer key unit 11

Asked by wiki @ in Mathematics viewed by 2852 persons


What did captain hook say in the bakery worksheet answers

Asked by wiki @ in Mathematics viewed by 2822 persons



Geometry unit 11 volume and surface area quiz 11 1

Asked by wiki @ in Mathematics viewed by 2794 persons


Unit 4 congruent triangles homework 1 classifying triangles gina wilson

Asked by wiki @ in Mathematics viewed by 2661 persons


Unit 1 test study guide geometry basics answer key

Asked by wiki @ in Mathematics viewed by 2493 persons



Cryptic quiz what is the opposite of a professional eater

Asked by wiki @ in Mathematics viewed by 2434 persons


The price of salmon at a fish market is 5.40

Asked by wiki @ in Mathematics viewed by 2288 persons


Why did the picture go to jail puzzle time answers

Asked by wiki @ in Mathematics viewed by 2214 persons



Algebra 1 8.2 worksheet characteristics of quadratic functions answer key

Asked by wiki @ in Mathematics viewed by 2128 persons


Trigonometry maze answer key

Asked by wiki @ in Mathematics viewed by 1786 persons


Gina wilson all things algebra 2015 unit 11 answer key

Asked by wiki @ in Mathematics viewed by 1777 persons