Answer:
<h2>
YOUR CORRECT ANSWER IS(B.)</h2>
Step-by-step explanation:
not sure what the dots are supposed to mean..
but i think it's 6B5??
Answer:
Each of those dashes are 5 minute for the small hand
and each of those dashes are 1 minutes for the long hand
The answers is A x=4.5y because for whatever y is you multiply it by 4.5 and it gives you your x. Trust me. They all match too; I checked.
Answer:




Step-by-step explanation:
The probability mass function P(X = x) is the probability that X happens x times.
When n trials happen, for each
, the probability mass function is given by:

In which p is the probability that the event happens.
is the permutation of n elements with x repetitions(when there are multiple events happening(like one passes and two not passing)). It can be calculated by the following formula:

The sum of all P(X=x) must be 1.
In this problem
We have 3 trials, so 
The probability that a wafer pass a test is 0.7, so 
Determine the probability mass function of the number of wafers from a lot that pass the test.



