设X~N（-1，4），Y~N（1，9）且X与Y相互独立，则X+Y~（）-湖北继续教育网网校

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[单选题]设X~N（-1，4），Y~N（1，9）且X与Y相互独立，则X+Y~（）

AN(13,0)b.N(-1,4)c.N(0,13)d.N(1,9)

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