Re: (VU-Study-Corner) sta301_Quiz

thanx a lot

On Thu, Jul 7, 2011 at 1:19 PM, *`·.¸¸.·*Madeeha*··.¸¸.·`* <madeeha.ckl@gmail.com> wrote:

Quiz Start Time: 01:10 PM Time Left 89 sec(s) Question # 1 of 10 ( Start time: 01:10:28 PM ) Total Marks: 1 A discrete probability function f(x) is always: Select correct option: Zero One Negative Non-negative

Quiz Start Time: 01:10 PM Time Left 88 sec(s) Question # 2 of 10 ( Start time: 01:11:20 PM ) Total Marks: 1 If f(x) is a continuous probability function, then P(X = 2) is: Select correct option: 1 0 1/2 2

Quiz Start Time: 01:10 PM Time Left 88 sec(s) Question # 3 of 10 ( Start time: 01:12:34 PM ) Total Marks: 1 The range of the binomial distribution is: Select correct option: 0, 1, 2, ………… 100 0, 1, 2, ………… n 0, 1, 2, ………… x 1,2, …………….n

Quiz Start Time: 01:10 PM Time Left 89 sec(s) Question # 4 of 10 ( Start time: 01:13:05 PM ) Total Marks: 1 In which of the following situations binomial distributions is approximate to normal distribution? Select correct option: n = 50, p = 0.01 n = 500, p = 0.001 n = 100, p = 0.05 n = 50, p = 0.02

Quiz Start Time: 01:10 PM Time Left 89 sec(s) Question # 5 of 10 ( Start time: 01:14:26 PM ) Total Marks: 1 The location and shape of the normal curve is (are) determined by: Select correct option: Mean Variance Mean & variance Mean & standard deviation

Quiz Start Time: 01:10 PM Time Left 89 sec(s) Question # 6 of 10 ( Start time: 01:14:56 PM ) Total Marks: 1 A random experiment has five outcomes in its sample space {s1, s2, s3, s4, s5}. If P(s1)=0.2,P(s2)=0.3, P(s3)=0.1 and P(s4)=0.2 then P(s5)=? Select correct option: 1 0.2 0.8 0.5

Quiz Start Time: 01:10 PM Time Left 87 sec(s) Question # 7 of 10 ( Start time: 01:15:54 PM ) Total Marks: 1 The joint density function f(x,y) will be a pdf if Select correct option: Both of integrals f(x,y) dx dy =1 Both of integrals f(x,y) dx dy >1 Both of integrals f(x,y) dx dy <1 Both of integrals f(x,y) dx dy =0

Quiz Start Time: 01:10 PM Time Left 88 sec(s) Question # 8 of 10 ( Start time: 01:16:12 PM ) Total Marks: 1 Which of the following is correct property for joint probability distribution of X and Y: Select correct option: Sigma f(X,Y)=1 Sigma f(Y,X)=1 Both of above None of above

Quiz Start Time: 01:10 PM Time Left 89 sec(s) Question # 9 of 10 ( Start time: 01:16:39 PM ) Total Marks: 1 A random variable that can assume every possible value in an interval [a, b]: Select correct option: Discrete variable Continuous variable Qualitative variable Categorical variable

Quiz Start Time: 01:10 PM Time Left 88 sec(s) Question # 10 of 10 ( Start time: 01:17:02 PM ) Total Marks: 1 Normal approximation to the binomial distribution is used when: Select correct option: np>5 nq>5 Both of the above None of the above

May you live every day of your life!!!!

 

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