Test = 0 assuming > 0, normality and using the sample 0, 1, -1, 3,

Test μ = 0 assuming μ > 0, normality and using the sample 0, 1, -1, 3, -8, 6, 1 (deviations of the azimuth [multiples of 0.01 radian] in some revolution of a satellite). Choose α = 5%.