Find the critical value Zc necessary to form a confidence interval at the level of confidence c=0.82 what does Zc=

Respuesta :

Answer:

The z-critical values are:

[tex]z_{0.09}=-1.34\\\\z_{0.91}=1.34[/tex]

Step-by-step explanation:

The confidence level is, c% = 82%.

The significance level for the two tails are:

Left tailed:

[tex]\frac{\alpha}{2} =\frac{1-c\%}{2}[/tex]

   [tex]=\frac{1-0.82}{2}\\\\=\frac{0.18}{2}\\\\\=0.09[/tex]

Right tailed:

[tex]1-\frac{\alpha}{2} =1-\frac{1-c\%}{2}[/tex]

         [tex]=1-0.09\\\\=0.91[/tex]

The z-critical values are:

[tex]z_{0.09}=-1.34\\\\z_{0.91}=1.34[/tex]

*Use the z-table.