Answered: In a survey of n = 400 randomly…

College Algebra

10th Edition

ISBN:9781337282291

Author:Ron Larson

Publisher:Ron Larson

Chapter8: Sequences, Series,and Probability

Section8.7: Probability

Problem 50E: Flexible Work Hours In a recent survey, people were asked whether they would prefer to work flexible...

See similar textbooks

Related questions

Question

100%

In a survey of n = 400 randomly selected Americans, a polling organization asked: "Do you favor eliminating Saturday mail delivery to lower the price of a postal stamp?" In the sample, 54% answered "yes" and the margin of error was reported to be plus or minus 5%. Which statement about the margin of error is correct?

Group of answer choices

There's a 95% chance the sample and population proportions differ by more than 5%.

There's a 95% chance that the population proportion is 54%.

There's a 95% chance the sample and population percentages differ by exactly 5%.

There's a 95% chance the sample and population proportions differ by less than 5%.

A national poll wants to determine what percent of all Americans favor a change in delivery to reduce the cost of postal stamps. A random sample of 1000 Pennsylvanians was obtained from a list of all Pennsylvanians. What is the major problem with this survey?

Group of answer choices

used the wrong sampling frame.

obtained a volunteer sample.

obtained a convenience sample.

failed to obtain a complete census

Expert Solution