Any help would be appreciated

Q1: 0.88015 ~ 88.015%, are

Q2: 0.88176 ~ 88.176%, are not

Step-by-step explanation:

Okay so a simple way to do these probability ones is to add an extra space around each side  

                                   A        B        C        D

ACCURATE               310    262    246    144    ___

NOT ACCURATE       31       51       37       12    ___

                                  ___    ___     ___    ___   ___  

Now in these spaces add all the the rows and columns accordingly  

                                    A          B          C          D

ACCURATE               310      262      246      144       _962_

NOT ACCURATE       31         51         37         12        _131_

                                 _341_  _343_  _283_  _156_   _1093_

Now the number in the place where the additional rows meet is your total number of orders, so this is what you would use for your probability.  

So we are looking for ACCURATE / ALL which is 962  

Now do 962 divided by 1093 and your probability comes out to 0.88015, so as a percentage, would be 88.015%

With replacement, all variables become independent, however without replacing that changes the probability.

When the 2 orders are selected, the final number of probability changes - so it would take down the total each time, the find the mean or average of the probability for your answer.

So since there is no replacement for ACCURATE / ALL which is 962, the division instead would be by 1091, since we are taking 2 orders out and not putting them back, it brings down the total number by 2, which would make the probability come out to 0.88176, or 88.176%

2mg of medicine

Step-by-step explanation: