Asked by Anonymous
Find z such that 5.0% of the standard normal curve lies to the left of z.
Answers
Answered by
mathhelper
Don't know if you are using 1970s kind of tables or graphs, but ....
find .05 in the main body of the table.
h tt p://www.z-table.com/
(delete the spaces obviously)
I see .0505 with a z of <b>-1.64</b> and .0495 with a z of <b>-1.65</b>
so I would pick half way between as <b>-1.645</b>
OR
open a new page, enter the following into the URL, (delete the 2 spaces
at the front again)
h tt ps://davidmlane.com/normal.html
click on "value from an area"
enter .05 in the box labeled "area"
the mean and SD should show as 0 and 1
in the "results" click on "below" and you should get
-1.645
find .05 in the main body of the table.
h tt p://www.z-table.com/
(delete the spaces obviously)
I see .0505 with a z of <b>-1.64</b> and .0495 with a z of <b>-1.65</b>
so I would pick half way between as <b>-1.645</b>
OR
open a new page, enter the following into the URL, (delete the 2 spaces
at the front again)
h tt ps://davidmlane.com/normal.html
click on "value from an area"
enter .05 in the box labeled "area"
the mean and SD should show as 0 and 1
in the "results" click on "below" and you should get
-1.645