Service sector activity "weakened in April," according to the Federal Reserve Bank of Richmond service-sector activity survey, released Tuesday.

Overall, the service sector revenues index slid to negative 9 in April, from positive 4 in March, while the number of employees index decreased to negative 10 from positive 64, the average wage index climbed to 11 from 5, and the expected product demand during the next six months index held at 11.

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