Answered: More conditions Consider each situation…

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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More conditions Consider each situation described.
Identify the population and the sample, explain what
p and pn represent, and tell whether the methods of this
chapter can be used to create a confidence interval.

a) A consumer group hoping to assess customer expe-
riences with auto dealers surveys 167 people who

recently bought new cars; 3% of them expressed
dissatisfaction with the salesperson.
b) What percent of college students have cell phones?
2883 students were asked as they entered a football
stadium, and 243 said they had phones with them.
c) 240 potato plants in a field in Maine are randomly
checked, and only 7 show signs of blight. How severe
is the blight problem for the U.S. potato industry?
d) 12 of the 309 employees of a small company suffered
an injury on the job last year. What can the company
expect in future years?

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