A. In each of the following situations, a random sample must be obtained. Determine whether a cluster, stratified, or systematic random sampling would be appropriate. Explain in detail how the sampling is to be conducted. Do not discuss expected results or conclusions. A large convenience store chain wishes to determine its customers’ level of satisfaction with regard to their service. A nationwide survey on charter change is to be conducted. (Note: there are seventeen regions in the Philippines.) An educational researcher wants to compare the difference in career goals between male and female students of Otto Hahn University who has 10,000students. A social researcher wants to determine whether electronic engineers who work in the communications field earn more than those who are in the semiconductor industry. A market analyst would like to compare the durability, in terms of mean time before wear, of two leading brands of car tires. B. The numbers of incorrect answers on a true or false competency test for a random sample of 15 students were recorded as follows: 2, 1, 3, 0, 1, 3, 6, 0, 3, 3, 5, 2, 1, 4, and Find a. mean, b. median, c. mode, d. range, e. standard deviation, f. variance. C. At what level are the following variables measured? _______ 1.The scores of students in a statistics quiz _ 2.The birth order of children in the family _ 3.Weights of a sample of bags of raw materials for the production of a certain product, measured in grams. _ 4.The natural eye color of a sample of 100 children. _________ 5.The final grade of graduate students taking up Statistics

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

A. In each of the following situations, a random sample must be obtained. Determine whether a cluster, stratified, or systematic random sampling would be appropriate. Explain in detail how the sampling is to be conducted. Do not discuss expected results or conclusions.

A large convenience store chain wishes to determine its customers’ level of satisfaction with regard to their service.
A nationwide survey on charter change is to be conducted. (Note: there are seventeen regions in the Philippines.)
An educational researcher wants to compare the difference in career goals between male and female students of Otto Hahn University who has 10,000students.
A social researcher wants to determine whether electronic engineers who work in the communications field earn more than those who are in the semiconductor industry.
A market analyst would like to compare the durability, in terms of mean time before wear, of two leading brands of car tires.

The numbers of incorrect answers on a true or false competency test for a random sample of 15 students were recorded as follows: 2, 1, 3, 0, 1, 3, 6, 0, 3, 3, 5, 2, 1, 4, and Find a. mean, b. median, c. mode, d. range, e. standard deviation, f. variance.

At what level are the following variables measured?

_______________ 1.The scores of students in a statistics quiz

_______________ 2.The birth order of children in the family

_______________ 3.Weights of a sample of bags of raw materials for the production of a certain product, measured in grams.

_______________ 4.The natural eye color of a sample of 100 children.

_______________ 5.The final grade of graduate students taking up Statistics

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