Recent content by physio

How do clinicians determine the appropriate drug dose based on pharmacokinetic data? I was reading up on a Phase 1 clinical trial study for a chemo drug and was wondering how do clinicians and doctors come up with the drug dose based on these studies. Do they make use of the pharmacokinetic data...

Scientists usually conduct a variety of in vitro and in vivo studies on rodent and their cell cultures and they show the concentration of a particular drug is effective against the disorder for both in vitro and in vivo for the rodents. My question is how do they translate that to a dose for the...

@PeroK : Thank you for your explanation. Got me to realize why P(AUB) = P(A) + P(B)!

Thank you for your answer. I think I understand now. Please do let me know if my explanation is correct. In your example, we are adding the two events (it is odd and number is 4) and grouping them as a single event and hence it is addition. Moreover, the sample space remains the same i.e. 6...

Hello, I am unsure as to why the probability of A U B = P(A) + P(B) for sets A and B being disjoint. Why do we add the two probabilities? Is it because the sample space remains the same but now we add the numerators as the number of events have increased and that is why we are adding the two...

@aikismos: Thanks for that wonderful explanation :) Cleared everything up!

I meant 3 * 5! :)

I believe I have understood now. Thanks for your reply Vanadium 50! If I use my method then the answer should be 3.5!/3! + 5!/2! (and not 4.5!/3!) which is equal to 6!/3! = 120. I was making a mistake while dividing the E1 block as now when you have E1 as the starting element then there are only...

Hello aikismos, Thank you for your reply :) The reason I have made 4 partitions is because E1=E2=E3=E. Won't the permutations be the same if you consider E1 as the first element or E2 as the first element or E3 as the first element and then the remaining elements. Will the set of words starting...

Hello aikismos, I thank you for putting in the effort. Much appreciated!

Hello aikismos, Does that mean these cases are redundant and should reduce to one case? E1, ...,...,...,...,... E2, ...,...,...,...,... E3, ...,...,...,...,... In that case we would have the following cases: K,...,...,...,...,... . . . E,...,...,...,...,... . . . P,...,...,...,...,... . . ...

Hello aikismos, I thank you for your reply! I wanted to know why is my method incorrect? Is my approach incorrect?? I haven't understood why the formula for permutations with repetitions is the way it is and I am trying to arrive at this formula by solving the above problem.

Hello, I am having trouble understanding the answer to the above question. The answer is 6!/3! and below is my working. I am having trouble arriving at the above answer and here is my approach. The question is to find the permutations of KEEPER minus all the duplicates. Therefore, to count...

Thanks for your replies!

I understood that the fermi level is a hypothetical energy level given by the Fermi-Dirac distribution where the probability of finding an electron is exactly 50%. My question is: it always takes (Ec-Ev) energy to excite the electrons in the conduction band in an intrinsic semiconductor or...