b) reject the null hypothesisc) reduce the sample sized) increase the sample sizee) maintainstatus quoAns: aResponse: See section 9.4 Testing Hypotheses about a ProportionDifficulty: HardLearning Objective: 9.4: Reach a statistical conclusion in hypothesis testing problems about apopulation proportion using the z statistic.63. Elwin Osbourne, CIO at GFS, Inc., suspects that at least 25% of e-mail messages sent byGFS employees are not business related.A random sample of 300 e-mail messages was selectedto test this hypothesis at the 0.01 level of significance.Fifty-four of the messages were notbusiness related.The null hypothesis is ____.Response: See section 9.4 Testing Hypotheses about a Proportion

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Difficulty: EasyLearning Objective: 9.4: Reach a statistical conclusion in hypothesis testing problems about apopulation proportion using the z statistic.64. Elwin Osbourne, CIO at GFS, Inc., suspects that at least 25% of e-mail messages sent byGFS employees are not business related.A random sample of 300 e-mail messages was selectedto test this hypothesis at the 0.01 level of significance.Fifty-four of the messages were notbusiness related.The appropriate decision is _______.

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Response: See section 9.4 Testing Hypotheses about a ProportionDifficulty: HardLearning Objective: 9.4: Reach a statistical conclusion in hypothesis testing problems about apopulation proportion using the z statistic.