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Telephone Efficiency Significance

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To encourage telephone efficiency, a catalog call center issues a guideline that at least half of all telephone orders should be completed within 2 minutes.

Subsequently, a random sample of 64 telephone calls showed that 40 calls lasted over 2 minutes.

(a) At α = .05 is this a significant departure from the guideline in a right-tailed test? State your hypotheses and decision rule. (b) Find the p-value.
(c) Is the difference important (as opposed to significant)?

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Solution Summary

The telephone efficiency significance is analyzed. A right-tailed test is analyzed to determine if the hypothesis is correct.

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