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D:-None of these
Correct Answer:- Option-B
Question 2-The ratio of two independent N(0, 1) variates is a:
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Ben
Com
Dez!
Correct Answer:- Option-A
Question 3-1f 7, and 7) are two unbiased estimates of parameter &, then (2 T,+573)/(7) is =
Ac Unbiased 1020
Be-Biased for 0
C:Consistent for 0
D:-None of these
Correct Answer:- Option-A
(Question 4:The random variable X has mean 5 and variance 9. Then P{[X-5|>4] is:
9

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Correct Answer:- Option-C
‘Question 5:"The statistical error associated to the statement “An innocent person is proved as guilty” is :
AsType 1 error
B:-Type 2 error
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D:-Critical region
Correct Answer:- Option-A
0650078 6:-70 1558 112/1 | against Hy: 1 based on large sample, the test statisticZ has a value 2. Then p-value associated to the test is:
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B--P{|Z|>2]
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D:-P[Z>2]
Correct Answer:- Option -B
(Question 7Let X and Y be random variables with Cov(X,¥)
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ശന ‏3ع‎
‎ധാനെ
‎D:-None of these
Correct Answer:- Option-B
Question 8"The degrees of freedom associated to ttest for the difference of the means of two samples having sizes m, n based on large sample is:
۸+1

25, then which of the following is true:

Bemtn-mn
ന
Dem+n-2
Correct Answer:- Option-D
Question8 9-1FF follows F(7,8), then 1/F follows:
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B-F(1,8)
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നം
Correct Answer:- Option-D
Question90:"The distribution function F(x) of a random variable X lies between:
۸-۵8 1
Be-Land 1
C+ and»
D:-None of these
Correct Answer:- Option-A

Question9 1=The probability mass function of a discrete random variable X is f(x)

2,34 and 0 for other values of X. Let F(x) denote the distribution function of X. Then F(4)-F(3) is:

7

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Correct Answer-Option-A

(Question 2:let X be a random variable with distribution function F(x). The distribution function of 2X+3 is:
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pore

Correct Answer:- Option-D
Question9 3A continuous random variable Xis symmetric about a real number a (a¢ R) if the distribution function Xa is same as the distribution function of:
AraX
BeXta
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DeX+a
Correct Answer:- Option-A

(Question9 4:Let X be a random variable with paf f(s)
5

exe. The median of the distribution is at:

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