The Pew Internet and American Life project reported in 2003 that 18% of Internet users have used it to search for information regarding experimental treatments or medicines. The sample consisted of 1220 adult Internet users, and information was collected from telephone interviews. The estimate for this is 25%. a. Perform a test of hypothesis at a 90% confidence level. Use the p-value method and a left tailed test. b. Perform a test of hypothesis at a 99% confidence level. Use the critical value method and a two tailed test.
The Pew Internet and American Life project reported in 2003 that 18% of Internet users have used it to search for information regarding experimental treatments or medicines. The sample consisted of 1220 adult Internet users, and information was collected from telephone interviews. The estimate for this is 25%. a. Perform a test of hypothesis at a 90% confidence level. Use the p-value method and a left tailed test. b. Perform a test of hypothesis at a 99% confidence level. Use the critical value method and a two tailed test.
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.7: Probability
Problem 58E: What is meant by the sample space of an experiment?
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The Pew Internet and American Life project reported in 2003 that 18% of Internet users have used it to search for information regarding experimental treatments or medicines. The sample consisted of 1220 adult Internet users, and information was collected from telephone interviews. The estimate for this is 25%.
a. Perform a test of hypothesis at a 90% confidence level. Use the p-value method and a left tailed test.
b. Perform a test of hypothesis at a 99% confidence level. Use the critical value method and a two tailed test.
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