Q.1 The administration department of PIMS Hospital Islamabad surveyed the number of days 400?

Since this question has been here for a long time, im assuming you found the answer already. I'll just give you some hints (in case others stumble on this same question). The mean is each of the days multiplied by their respective frequencies added all together and divided by the sum of the frequencies.

You can calculate the standard deviation using your graphing calculator, by inputing those values.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.