find the critical value Zc necessary to form a confidence interval at the level of confidence shown below,
c=0.80

Question

find the critical value Zc necessary to form a confidence interval at the level of confidence shown below, 
c=0.80

anonymous · Answer

help with the Ti-84 cac too

anonymous · Answer

ok so i got .1 now how do i plug it in to the calculator

anonymous · Answer

k so the critical value you do 1-c/2

anonymous · Answer

that tells you the area on each side of the curve

anonymous · Answer

so 1 - .1 divided by 2

anonymous · Answer

Now get a z chart

anonymous · Answer

and find the corresponding value of z for a p value of 0.1

anonymous · Answer

that is your critical value at an 80% confidence

anonymous · Answer

.95

anonymous · Answer

so the z value at a p value of 0.1 is 0.5398...

anonymous · Answer

anonymous · Answer

i dont understand the charts

anonymous · Answer

where did you go