a.In the standard normal and t distributions, the 90% confidence multiplier is e

Question

a.In the standard normal and t distributions, the 90% confidence multiplier is equal to the ___________ 1-sided critical value.

b.In the standard normal and t distributions, the 2-sided 5% critical value is equal to the ___________% confidence multiplier.

c.In the standard normal and t distributions, which is larger, the 1-sided 5% critical value or the 1-sided 10% critical value? Answer: ____________

d. In the standard normal and t distributions, the 2-sided 5% critical value is equal to the 1-sided ________% critical value.

Explanation / Answer

Ans:

a)90% confidence multiplier is 1.645

normsdist(1.645)=0.95

normsdist(-1.645)=0.05

so,,it is equal to 5% 1-sided critical value.

b)2 sided 5% critical value i.e +/-1.96 is 95% confidence multiplier

c)1 sided 5% critical value=1.645

1 sided 105 critical value=1.282

so,1 sided 5% critical value is larger.

d) 2 sided 5% critical value=+/-1.96

normsdist(1.96)=0.975 i.e 97.5% or 2.5% critical value

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