Find z such that 5.0% of the standard normal curve lies to the left of z.

Answer 1

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 -1.64 and .0495 with a z of -1.65
so I would pick half way between as -1.645

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