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A dump of our free Chat sessions, in case it is useful. It excludes white boards used during paid sessions.





tutor3 : Hello Student, May I help you with your Math problems?
student : What is the expected number of patients in a sample of 20 that survive the heart-transplant operation? What is the standard deviation of this binomial distribution?
tutor3 : expectation of a binomial distribution is n*p .so what is the p of the distribution given because n=20 given. so supply the p and you will get the answer
student : so if the p is 0.8, you just do 20*0.8?
tutor3 : yes
tutor3 : and for standard deviation the formula is n*p*(1-p).just plug-in the values and get the answer.
student : ok thank you! i just have one more question i cant figure out
tutor3 : Please note, due to lack of resources, we can only do 1 problem FREE in 24 hours period. You can always come back tomorrow for another free problem. Please, tell your friends about our free service - 1 free in 24 hours
tutor3 : Fax your homework to 206-339-8302. or, email to *****@aafter.com. Include your email and phone number.


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