A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
Medal and Fan will be given!!
The length of human pregnancies varies according to an approximately normal distribution with a mean of 266 days and variance of 256 days.
How long are the longest 2.5% of all pregnancies?
(Explanation question. No multiple Choice) Please help!
anonymous
 one year ago
Medal and Fan will be given!! The length of human pregnancies varies according to an approximately normal distribution with a mean of 266 days and variance of 256 days. How long are the longest 2.5% of all pregnancies? (Explanation question. No multiple Choice) Please help!

This Question is Closed

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@pooja195 @dan815 @ganeshie8 @Hero @Kainui @kiamousekia @HowardWolowitz

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Abhisar Please Help.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Abhisar Can you please help. This is my last question.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0need help please @Michele_Laino

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.2here we have to refer to the "erf" function

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay. That is what I am confused on... @Michele_Laino

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.2the standard deviation, of your distribution, is: \[\Large \sigma = \sqrt {256} = 16\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay. I got it so far @Michele_Laino

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So now what? @Michele_Laino

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.2please wait, I'm working on your question...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh yeah sure. Take your time :D @Michele_Laino

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.2I think that your problem requests for this value: dw:1441213069159:dw

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.2from the table of the "erf" function we get: \[\large N = 266 + 1.96 \cdot \sigma = 266 + 1.96 \cdot 16 = 297.36 \cong 297\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay so is that our final answer though? 297? @Michele_Laino

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.2yes! I think so!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh my god! Thank you so much! That was very hard but you made it so easy! Thank you! Fan and medal! :) @Michele_Laino

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.2please wait I have a doubt: maybe the requested reasoning can be this: dw:1441214281328:dw so we have: \[\Large 266 + 2.24 \cdot 16 = 301.84 \cong 302\]
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.