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  

d is the correct answer

step-by-step explanation:

x= 8 because 3x = 3 * 8, and 3*8 = 24

question: how many people can she serve?

answer: she can serve 16.66666667 people. so she can only give 16 people a complete serving.

question: does she have enough ice cream for her guests?

answer: no. explanation: she only has enough for 16 people to have a full serving. however, she can give a 17th person a partial serving.