1.The most commonly used confidence level is

a)99.5%

b)95%

c)90.5%

d)90%

2.An alpha level of 0.05 is the same as a confidence level of

a)99.5%

b)95%

c)90.5%

d)90%

3.A confidence level of 99% is the same as an alpha level of

a)0.05

b)0.10

c)0.01

d)0.001