[Pak Youth] sta 301

plz in question ka ans bta day koi plz


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

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