The National Technology Readiness Survey sponsored by the Smith School of Business at the University of Maryland surveyed 418 randomly sampled Americans, asking them how often they delete spam emails. In 2004, 23% of the respondents said they delete their spam mail once a month or less, and in 2009 this value was 16%. a) What are the hypotheses for evaluating if the proportion of those who delete their email once a month or less has changed from 2004 to 2009? O Ho:P2009 = P2004 and HA:P2009 > P2004 Ho: P2009 = P2004 and HA:P2009 # P2004 O Ho: P2009 = P2004 and HA:P2009 < P2004 O Ho:p= P2009 and HA:p= p2004 b) What is the point estimate for the difference between the two population proportions?

The National Technology Readiness Survey sponsored by the Smith School of Business at the University of Maryland surveyed 418 randomly sampled Americans, asking them how often they delete spam emails. In 2004, 23% of the respondents said they delete their spam mail once a month or less, and in 2009 this value was 16%. a) What are the hypotheses for evaluating if the proportion of those who delete their email once a month or less has changed from 2004 to 2009? O Ho:P2009 = P2004 and HA:P2009 > P2004 Ho: P2009 = P2004 and HA:P2009 # P2004 O Ho: P2009 = P2004 and HA:P2009 < P2004 O Ho:p= P2009 and HA:p= p2004 b) What is the point estimate for the difference between the two population proportions?

Name: The National Technology Readiness Survey sponsored by the Smith Schoo
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Description: The National Technology Readiness Survey sponsored by the Smith School of Business at the University ofMaryland surveyed 418 randomly sampled Americans, asking them how often they delete spam emails. In2004, 23% of the respondents said they delete t

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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