> t.test(A,mu=7625,conf.level=0.99)

        One Sample t-test

data:  A
t = -2.5304, df = 10, p-value = 0.02985
alternative hypothesis: true mean is not equal to 7625
99 percent confidence interval:
5662.256 7845.017
sample estimates:
mean of x
6753.636

> t.test(A,mu=7625,conf.level=0.90)

        One Sample t-test

data:  A
t = -2.5304, df = 10, p-value = 0.02985
alternative hypothesis: true mean is not equal to 7625
90 percent confidence interval:
6129.492 7377.781
sample estimates:
mean of x
6753.636