Question

Compute the critical value z Subscript alpha divided by 2 that corresponds to a 86​% level of confidence.

Answer 1

Answer:

z = 1.476

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.86}{2} = 0.07$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$.

So it is z with a pvalue of $1-0.07 = 0.93$, so $z = 1.476$

The answer is z = 1.476