# STA301 Fall 2011 Final Term Feb 2012 – VU Current Paper – 07 Feb 2012

STA301 Fall 2011 Final Term Feb 2012 – VU Current Paper – 07 Feb 2012

1- Normal distribution X, u (meu),n,s, Z(alpha)=2.33 this was given and isko verify krny ky liye kaha gya tha result ko (Marks 5)
2- Probability of one electric device failure is 0.01. If a sample is chosen of 400, what is probability that exactly 2 are defective (Marks 5)
3- Two random samples were given and were asked to find Sp (Marks 5)
4- Two dices are rolled. Find probability that outcome is equal or more than 11. (Marks 5)
5- If X is binomial distribution n=5, p=0.5, q=0.5 then find SD(X) (Marks 3)
6- n=24, Mean=33, s=15, x=40.4. Compute t statistic (Marks 3)
7- 90% confidence interval of population mean is 11 to 20. Interpret result (Marks 3)
8- E(XY)=421, E(X)=42, E(Y)=15. Check independance (Marks 3)
9- Difference between statistics and statistic (Marks 3)
10- Why we call standard deviation the standard error (Marks 2)
11- if E(Y)=0.5 then find E(10.5+2Y) … (Marks 2)
12- What is the meaning of ‘b’ in Y=a+bX (Marks 2)
13- Explain level of significance (Marks 2)