Answer:
She will need 10 full tablets and two thirds of a tablet
Step-by-step explanation:
First we will find how many tablets ana needs for one day:
In each day ana needs 40x2 mg of medicine, they come in tablets of 15 mg. In one day, she needs 80 / 15 = 5 and 1/3 of a tablet.
In two days, she needs double that amount. (5 and 1/3) x 2 = 10 and 2/3
Answer:



Step-by-step explanation:
Given
Let
A = Event of being a universal donor.
So:


Solving (a): Mean and Standard deviation.
The mean is:



The standard deviation is:




Solving (b): P(x = 3)
The event is a binomial event an dthe probability is calculated as:

So, we have:




30 people half of 60 is 30