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STA301 Quiz No.3 Shared by Madiha

Question # 1 of 10 ( Start time: 11:05:48 PM ) Total Marks: 1
If the second moment ratio is greater than 3 the distribution will be:
Select correct option:
Mesokurtic
Leptokurtic
Platykurtic
None of these


Question # 2 of 10 ( Start time: 11:06:22 PM ) Total Marks: 1
Which statement is true for a discrete Uniform distribution?
Select correct option:
It is absolutely symmetrical distribution.
Sometimes it becomes symmetrical.
Its graphical shape of the data is like “U”.
Cannot say anything without observing the actual data.


Question # 3 of 10 ( Start time: 11:07:07 PM ) Total Marks: 1
Density function of normal distribution attains its maximum value when the value of random variable X is:
Select correct option:
X = Mean
X = Standard Deviation
X = Variance
All above


Question # 4 of 10 ( Start time: 11:07:44 PM ) Total Marks: 1
If E(x) = 2.5 then E(2X+0)=.....:
Select correct option:
2.5
5
0
3.5


Question # 5 of 10 ( Start time: 11:08:35 PM ) Total Marks: 1
In hyper geometric distribution formula N= number of units in the population, n = number of units in the sample, and k is defined as
Select correct option:
number of failures in the sample
number of failures in population
number of successes in sample
number of successes in population


Question # 6 of 10 ( Start time: 11:09:29 PM ) Total Marks: 1
The mean of the continuous probability function f(x) can be obtained by
Select correct option:
Integrating the x
Integrating the function f(x)
Integrating the product xf(x)
Multiplying the x by its function f(x)


Question # 7 of 10 ( Start time: 11:10:21 PM ) Total Marks: 1
From the following table; X f(x) 2 1/36 3 2/36 4 3/36 5 4/36 6 5/36 7 6/36 8 5/36 9 4/36 10 3/36 11 2/36 12 1/36 The value of F(x=3) will be:
Select correct option:
1/36
2/36
3/36
7/36


Question # 8 of 10 ( Start time: 11:11:25 PM ) Total Marks: 1
If µ3 = 3 and µ2 = 2 then the skewness of the distribution will be:
Select correct option:
2.5
1.125
0.87
1.5


Question # 9 of 10 ( Start time: 11:12:12 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


Question # 10 of 10 ( Start time: 11:13:20 PM ) Total Marks: 1
When the event occur randomly over a specified interval of time, space or length; the distribution is known as:
Select correct option:
Poisson Distribution
Hyper geometric distribution
Poisson Process.
None of the above


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