21.
(a) 0
(b) 1
(c) 2
(d) 3
Answer: (c)
22.
Answer: (c)
23.
Answer: (b)
24.
Answer: (a)
25. Consider the following data:
The mode is:
(a) 22.44
(b) 21.22
(c) 20.22
(d) 18.66
(a) 22.44
(b) 21.22
(c) 20.22
(d) 18.66
Answer: (c)
26. For the regression equations:
(a) 0.49
(b) 0.38
(c) 0.24
(d) 0.16
(b) 0.38
(c) 0.24
(d) 0.16
Answer: (c)
27. Recurrence formula for Poisson distribution is:
Answer: (b)
28. The diameter of an electric cable is assumed to be continuous random variable with Probability density function:
𝑓(𝑥)=6𝑥 (1−𝑥), 0≤𝑥≤1
Its mean will be:
(a) 0
(b) 1
(c) 1/2
(d) 1/20
𝑓(𝑥)=6𝑥 (1−𝑥), 0≤𝑥≤1
Its mean will be:
(a) 0
(b) 1
(c) 1/2
(d) 1/20
Answer: (c)
29. The mean for normal distribution is:
(a) 3
(b) 2
(c) 1
(d) 0
(a) 3
(b) 2
(c) 1
(d) 0
Answer: (d)
30. What is the type of the following partial differential equation?
(a) Hyperbolic
(b) Parabolic
(c) Elliptic
(d) Circular
(b) Parabolic
(c) Elliptic
(d) Circular
Answer: (b)
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