Homework Help: statistics

Posted by Amy on Monday, May 9, 2011 at 11:49am.

Virtual call centers are staffed by individuals working out of their homes. ABC Services is considering employing home-based agents, but only if a level of customer satisfaction greater than or equal to 80% can be maintained. A trial program was conducted using home-based agents. In an SRS of 300 customers, 252 reported that they were satisfied with the service they received.
(a) What is sample proportion ��?

(b) What is the standard error of ��?

(c) Compute a 95% Confidence Interval for the true trial program satisfaction level.

(d) Conduct a hypothesis test to determine if the trial program sample supports the conclusion that the home-based agent satisfaction level meets the level required by ABC Services. Be sure to state your Null and Alternative Hypotheses, test statistic, p-value, and conclusion.

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