What Are You Waiting For?
Sign In or Sign Up Now to begin your journey with us!
Invite your friends now. the more the merrier! Invite your friend to connect with each other.
:: Movie Contest Update ::
This contest has been closed.
Sign in or sign up
now to tell your friend about your referrer ID for use upon their registration. Cheers.
Weekly movie voucher contest is closed.
Maberlee weekly movie voucher contest is ended. Last pair of movie vouchers have been given out.
View past contest winners
manyam soumith reddy
the probability that a teacher will give an unannounced test during any class meeting is 1/5. if a student is absent twice then ther probability that the student will miss at least one test is
May 5, 2016 at 3:42pm
Miss 2 lessons: So, Let 'YES' be the presence of unannounced test and 'NO' be the absence of unannounced test. Lesson 1 | Lesson 2 ----------------------------------- NO YES = (4/5)(1/5) = 4/25 YES NO = (1/5)(4/5) = 4/25 YES YES = (1/5)(1/5) = 1/25 By adding them all, probability of missing at least one test = 4/25 + 4/25 + 1/25 = 9/25
May 6, 2016 at 2:16am
Sign In or Sign Up
to reply to this post.
. All rights reserved. A Chong Tian En production.