Find the indicated area under the curve of the standard normal distribution, then convert it to a percentage and fill in the blank. About% of the area is between z = 2.2 and z = 2.2 (or within 2.2 standard deviations of the mean).
About% of the area is between z = 2.2 and z = 2.2 (or within 2.2 standard deviations of the mean).

Complete Question

Find the indicated area under the curve of the standard normal distribution, then convert it to a percentage and fill in the blank.

About_____% of the area is between z = - 2.2 and z = 2.2 (or within 2.2 standard deviations of the mean).

About_____% of the area is between z = - 2.2 and z = 2.2 (or within 2.2 standard deviations of the mean).

About 97.219% of the area is between z = - 2.2 and z = 2.2 (or within 2.2 standard deviations of the mean).

Step-by-step explanation:

From the question given we can see that they both are the same so 1  will just solve one

   Now the area under this given range can be represented mathematically as

Now  from the z-table  

and

So

So converting to percentage