Concept explainers
Politicians in the Florida Keys need to know if the residents of Key Largo think the amount of money charged for water is reasonable. The politicians decide to conduct a survey of a sample of Key Largo's residents. Which procedure would be most appropriate for a sample of Key Largo's residents?
a. Survey all water customers who pay their water bills at Key Largo City Hall on the third day of the month,
b. Survey a random sample of executives who work for the water company in Key Largo.
c. Survey 5000 individuals who are randomly selected from a list of all people living in Georgia and Florida.
d. Survey a random sample of persons within each neighborhood of Key Largo.
Answer to Problem 1T
Solution:
Survey a random sample of persons within each neighborhood of Key Largo. Therefore, option d is correct.
Explanation of Solution
Given:
The politicians of the Florida Keys want to know the response of the people of Key Largo regarding the amount charged for the water there. The options are given as follows:
Option (a) is given as Survey all water customers who pay their water bills at Key Largo City Hall on the third day of the month.
Option (b) is given as Survey a random sample of executives who work for the water company in Key Largo.
Option (c) is given as Survey 5000 individuals who are randomly selected from a list of all people living in Georgia and Florida.
Option (d) is given as survey a random sample of persons within each neighborhood of Key Largo.
Explanation:
Whenever there is a need to generalize a large population size, there should be equal chance of selecting for every member. Random sampling is a way to achieve the equal chance to everyone in the population.
Surveying a random sample of people within each neighborhood of Key Largo will ensure that the responses of those people represent the responses of the people from all over Key Largo. So, this random sample is a generalization of the whole population. Option (d) is given as survey a random sample of persons within each neighborhood of Key Largo.
Want to see more full solutions like this?
Chapter 12 Solutions
EBK THINKING MATHEMATICALLY
- Let G be a connected graph with n ≥ 2 vertices. Let A be the adjacency matrix of G. Prove that the diameter of G is the least number d such that all the non-diagonal entries of the matrix A are positive.arrow_forwardfind the general soultion (D-DxDy-2Dx)Z = sin(3x+4y) + x²yarrow_forward3. Show that (a) If X is a random variable, then so is |X|;arrow_forward
- 8. [10 marks] Suppose that 15 people are at a dinner and that each person knows at least 9 of the others. Can the diners be seated around a circular table so that each person knows both of their immediate neighbors? Explain why your answer is correct.arrow_forwarddx Y+2 h dy x + Z " dz X+Z find three Soultion indeparedarrow_forward(b) State Fubini's Theorem without proof. Theorem to demonstrate thatarrow_forward
- (b) Define a simple random variable. Provide an example.arrow_forward19. Let X be a non-negative random variable. Show that lim nE (IX >n)) = 0. E lim (x)-0. = >arrow_forward9. [10 marks] Consider the following graph G. (a) Find the Hamilton closure of G. Explain why your answer is correct. (b) Is G Hamiltonian? Explain why your answer is correct.arrow_forward
- Holt Mcdougal Larson Pre-algebra: Student Edition...AlgebraISBN:9780547587776Author:HOLT MCDOUGALPublisher:HOLT MCDOUGALBig Ideas Math A Bridge To Success Algebra 1: Stu...AlgebraISBN:9781680331141Author:HOUGHTON MIFFLIN HARCOURTPublisher:Houghton Mifflin HarcourtCollege Algebra (MindTap Course List)AlgebraISBN:9781305652231Author:R. David Gustafson, Jeff HughesPublisher:Cengage Learning
- Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw Hill