A national business magazine reports that the mean age of retirement for women executives is 61.7. A women’s rights organization believes that this value does not accurately depict the current trend...

A national business magazine reports that the mean age of retirement for women executives is 61.7. 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 98 recently retired women executives and found that they had a mean age of retirement of 60.6. Assuming the population standard deviation is 4.3 years, is there sufficient evidence to support the organization’s belief at the 0.05 level of significance?