Nigeria has set a new naira exchange rate for consumers with certain foreign expenses and stepped up dollar sales on the official market to narrow the spread with the black market. Analysts doubted whether the moves would draw investors back to the suffering economy. The regulator said Nigerians can now get the dollar at N360 across all commercial banks within the country. Nigeria is battling a currency crisis brought on by low oil prices. The prices have tipped its economy into a recession, hammered its dollar reserves and created chronic dollar shortages, frustrating businesses and individuals. The central bank, opposed to a free naira float, has been selling the U.S. currency on the official currency market to try to narrow the spread with the black market rate, which was at 390 last week, albeit down from 520 to the dollar a month ago.