University:
East Georgia State College
Course:
BUSA 1105 | Introduction to Business
Academic year:

2022
Views:

464

Pages:

2
Author:

StellarStrategist

Name ___________________ Date _________ Practice For11se withpages Identify the type of sample described. Then tell if the sample is biased. Explain your reasoning. 1. A consumer advocacy group wants to know if car owners believe their car is reliable. The group randomly selects 1020 car owners and mails out a survey to each one. t7219. ±7.5% n:;::; n-& Technology Survey In a survey of 504 people in the United States, about 11% said that the influx of new technologies such as computers has left them feeling ovetwhehned. 20. What is the margin of error for the survey? Rowid your answer to the nearest tenth of a percent. 21. Give an interval that is likely to contain the exact percent of all people in the United St.ates who feel overwhelmed by the influx of new technologies. /3e.twten In Exercises 22-25, use the following information. TV in the Bedroom A survey reported that 510 kids ages 8 to 18, or 68% of those surveyed, have a TV in their bedroom. 22. How many kids ages 8 to 18 were surveyed? 750 ;c1d.S 23. What is the margin of error for the survey? Round your answer to the nearest tenth of a percent. 24. Give an interval that is likely to contain the exact percent of all kids ages 8 to 18 who have a TV in their bedroom 8e.tw.e.e,n 25. About how many kids ages 8 to 18 should be surveyed to have a margin of error of2.5%?

Math 11.4 Worksheet Key

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