A national business magazine reports that the mean age of retirement for women executives is 61.5. A women’s rights organization believes that this value does not accurately depict the current trend in retirement. To test this, the group polled a simple random sample of 91 recently retired women executives and found that they had a mean age of retirement of 62.0. Assuming the population standard deviation is 2.5 years, is there sufficient evidence to support the organization’s belief at the 0.10 level of significance?

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