Critical Z-value 0.15

Given α = 0.15

Calculate the right-tailed and left-tailed critical value for Z

Since α = 0.15, the area under the curve is 1 - α → 1 - 0.15 = 0.85

Our critical z value is 1.0364

Our critical z-value = -1.0364

z	Probability (Area under Curve)
-2.3263	0.01
-2.0537	0.02
-1.8808	0.03
-1.7507	0.04
-1.6449	0.05
-1.5548	0.06
-1.4758	0.07
-1.4051	0.08
-1.3408	0.09
-1.2816	0.10
-1.2265	0.11
-1.175	0.12
-1.1264	0.13
-1.0803	0.14
-1.0364	0.15
-0.9945	0.16
-0.9542	0.17
-0.9154	0.18
-0.8779	0.19
-0.8416	0.20
-0.8064	0.21
-0.7722	0.22
-0.7388	0.23
-0.7063	0.24
-0.6745	0.25
-0.6433	0.26
-0.6128	0.27
-0.5828	0.28
-0.5534	0.29
-0.5244	0.30
-0.4959	0.31
-0.4677	0.32
-0.4399	0.33
-0.4125	0.34
-0.3853	0.35
-0.3585	0.36
-0.3319	0.37
-0.3055	0.38
-0.2793	0.39
-0.2533	0.40
-0.2275	0.41
-0.2019	0.42
-0.1764	0.43
-0.151	0.44
-0.1257	0.45
-0.1004	0.46
-0.0753	0.47
-0.0502	0.48
-0.0251	0.49
0	0.50
0.0251	0.51
0.0502	0.52
0.0753	0.53
0.1004	0.54
0.1257	0.55
0.151	0.56
0.1764	0.57
0.2019	0.58
0.2275	0.59
0.2533	0.60
0.2793	0.61
0.3055	0.62
0.3319	0.63
0.3585	0.64
0.3853	0.65
0.4125	0.66
0.4399	0.67
0.4677	0.68
0.4959	0.69
0.5244	0.70
0.5534	0.71
0.5828	0.72
0.6128	0.73
0.6433	0.74
0.6745	0.75
0.7063	0.76
0.7388	0.77
0.7722	0.78
0.8064	0.79
0.8416	0.80
0.8779	0.81
0.9154	0.82
0.9542	0.83
0.9945	0.84
1.0364	0.85
1.0803	0.86
1.1264	0.87
1.175	0.88
1.2265	0.89
1.2816	0.90
1.3408	0.91
1.4051	0.92
1.4758	0.93
1.5548	0.94
1.6449	0.95
1.7507	0.96
1.8808	0.97
1.96	0.975
-1.96	0.025
2.0537	0.98
2.3263	0.99
-2.5758	0.005
2.5758	0.995