Locate the following percentile under the normal curve

[acob]

Hi, sir/ma'am. here is a sample exercise sent to us by out teacher and he said that we can try to solve it before he will give the answer to us.

can someone guide me or tell me the formula that will be using to solve this . thank you for your help

here is the question
locate the percentile under the normal curve

Z score =

 

[MarkFL]

Hello, and welcome to FMH!

What will the area under the curve to the left of the requested \(z\)-score be?

 

[acob]

Hi sir, I can't compute the area under the curve because I don't have any other value to use to compute it

here is the original question.

 

[Dr.Peterson]

Hi sir, I can't compute the area under the curve because I don't have any other value to use to compute it

here is the original question.

View attachment 19656

What does the percentile tell you about the area under the curve to the left of a specific z?

That is, what does [MATH]P_{86}[/MATH] mean?