A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
Find the area under the normal distribution curve between z = 1.30 and z = 3.25.
anonymous
 one year ago
Find the area under the normal distribution curve between z = 1.30 and z = 3.25.

This Question is Open

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1which option do you want to use: table or calculator?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1ok we can use a table like this one https://www.stat.tamu.edu/~lzhou/stat302/standardnormaltable.pdf

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1does something like that look familiar?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yes Thanks I'm kind of confused with this lesson

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1first we'll find P(Z < 1.30) look at the row that starts with `1.3` then find the column that has `.00` at the top of the column what number is at the intersection of that row and column?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1do the same for P(Z < 3.25)

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1look at the row starting with `3.2` and the column starting with `0.05`

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1now subtract the two (bigger  smaller)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0wow Thanks a lot. That's an answer choice I appreciate it

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1you should get .99942.90320 = 0.09622 so P(1.30 < z < 3.25) = 0.09622 The rule I used was \[\Large P({\color{red}{a}} < z < {\color{blue}{b}}) = P(z < {\color{blue}{b}})  P(z < {\color{red}{a}})\] where b > a so, \[\Large P({\color{red}{1.30}} < z < {\color{blue}{3.25}}) = P(z < {\color{blue}{3.25}})  P(z < {\color{red}{1.30}})\]
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.