anonymous
  • anonymous
Find the critical value zc necessary to form a confidence interval at the level of confidence shown: c=0.85 zc= (round to 2 decimal places as needed)
Mathematics
katieb
  • katieb
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perl
  • perl
you can use a table or a calculator to find this
anonymous
  • anonymous
is kinda hard for me ... doing in the TI 84
perl
  • perl
|dw:1436287379018:dw|

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perl
  • perl
with a TI 84 there is a command invNorm
perl
  • perl
that will give you the z score
perl
  • perl
first you need to find the area to the left of it
perl
  • perl
|dw:1436287575051:dw|
perl
  • perl
TI 84 2nd -> VARS -> 3:invNorm( ) then enter .15/2
perl
  • perl
that will give you the negative of the z score. then just make it positive
perl
  • perl
|dw:1436287894144:dw|
anonymous
  • anonymous
OHhh Jesus that was easy... Thank you very much... :)
perl
  • perl
your welcome

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