نموذج الفاينل a الاآحصااااء

[فطوم A]

In a certain school, it is known that 81% of instructors are using e-mail to send
messages. For a sample of 10 instructors, find the probability that exactly 6 of them
are using e-mail.
A) 0.0773
B) 0.0004
C) 0.2824
D) 0.0043