The Pew Internet and American Life Project reported on the widespread use of the Internet to search for information regarding experimental treatments or medicines. From telephone interviews of 1449 adult Internet users, it was found that 266 had searched for information on experimental treatments or medicines in the past year. a. With 98 % confidence, we estimate between _% and _% of adult Internet users had searched for information on experimental treatments or medicines in the past year. (After converting to percentages, round the limits of your interval to two decimal places.) b. If the study were repeated with a sample of 1092 adult Internet users, what would happen to the margin of error for the interval? the margin of error would increase the margin of error would not be affected the margin of error would decrease c. Based on the interval calculated, could one conclude less than 20% of adult Internet users have searched for information on experimental treatments or medicines in the past year? Explain. No, because both limits of the interval are below 20%. Yes, because the lower limit of the interval is less than 20%. No, because the upper limit of the interval is greater than 20% while the lower limit is less than 20%. Yes, because both limits of the interval are below 20%.

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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The Pew Internet and American Life Project reported on the widespread use of the Internet to search for information regarding experimental treatments or medicines. From telephone interviews of 1449 adult Internet users, it was found that 266 had searched for information on experimental treatments or medicines in the past year.

a. With 98 % confidence, we estimate between _____% and _____% of adult Internet users had searched for information on experimental treatments or medicines in the past year. (After converting to percentages, round the limits of your interval to two decimal places.)

b. If the study were repeated with a sample of 1092 adult Internet users, what would happen to the margin of error for the interval?

the margin of error would increase
the margin of error would not be affected
the margin of error would decrease

c. Based on the interval calculated, could one conclude less than 20% of adult Internet users have searched for information on experimental treatments or medicines in the past year? Explain.

No, because both limits of the interval are below 20%.
Yes, because the lower limit of the interval is less than 20%.
No, because the upper limit of the interval is greater than 20% while the lower limit is less than 20%.
Yes, because both limits of the interval are below 20%.

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