Mon 6 Jun, 2016 03:41 am - The average age of teaching staff in a certain institution is 51.0 years old. Assume that the distribution of ages is normal and has a standard deviation of 8.0 years. If 9 teaching staff are... (view)
Mon 9 May, 2016 05:00 am - A sample of small bottles and their contents has the following weights (in grams): 4, 2, 5, 4, 5, 2 and 6. What is the sample variance of the weight? (view)
Tue 5 Apr, 2016 08:18 pm - I visit the poor often
The rich never knew my existence
I am a murderer but no court can punish me
What am I?
Please help me. Thank you :) (view)
