Question

Find the indicated area under the standard normal curve.

To the left of z= -1.09 and to the right of z= 1.09

A) The total area to the left of z= −1.09 and to the right of z= 1.09 under the standard normal curve is:_______? (Round to four deciamal places as needed).

Answer 1

We have to find the probability

using the property

so, we can write it as

again, using property

we can write

Using z distribution table, for z value 1.09, p value is 0.8621

setting the value, we get

So, required area or probability is 0.7242 (rounded to 4 decimals)