Kerala PSC Previous Years Question Paper & Answer
Page:7
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'STATISTICAL ASSISTANT GR II ECONOMICS AND STATISTICS' And exam conducted in the year 2015. And Question paper code was '011/2015/OL'. Medium of question paper was in Malayalam or English . Booklet Alphacode was 'A'. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.
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D:-None of these
Correct Answer:- Option B
Questiong2:The ratio of two independent N(0,1) variates is a:
५५
Correct Answer:- Option-A
Question83+1£ 7, and 7, are two unbiased estimates of parameter 4, then (2 T +572)/(7) is -
AcUnbiased 1020
B:-Biased for 0
CiConsistent for 0
D:-None of these
Correct Answer:- Option-A
Questiona4:The random variable X has mean 5 and variance 9. Then P[X-5|>4] is:
9
ಸ್ಸ
4
ष
9
ടേ
4
ण
Correct Answer:- OptionC
Questiona5:The statistical error associated to the statement "An innocent person is proved as guilty” is :
கஜல ண
حمجہ 2 0ج7
மணை
D:-Critical region
Correct Answer:- Option-A
Question86:To tost Hy:u = 1 against Ho:y+ | based on large sample, the test statistic Z has a value 2. Then p-value associated to the test is:
கதுவ
(2-2)
ടാ
फण]
Correct Answer:- Option B
0೫650078 7-026 and Y be random variables with Cov(X,)
पप)
حا 01+0 >۳ 0(
हि ಎಗರ೧ಣ7)
D:-None of these
Correct Answer:- Option B
25, then which of the following is true:
Questiong8:The degrees of freedom associated to t-test for the difference of the means of two samples having sizes m, n based on large sample is:
ക്ത
Bem+nmn
ടേ
مجه
Correct Answer:- Option-D
Question89-I£ F follows F(7,8), then 1/F follows:
കള
ദള
ടേവ
மக)
Correct Answer:- Option-D
Question90:The distribution function F(x) of a random variable X lies between:
۸-۵8 1
85-11
6: 0ھ >
D:-None of these
Correct Answer:- Option-A
Question9 1:-The probability mass function of a discrote random variable X is f(x
A
ம்
Correct Answer:- Option-A
Question92:let X be a random variable with distribution function F(x). The distribution function of 2X+3 is:
കജ
೦೫೦೭೨3)
മം
Correct Answer:- Option-D
Question93+A continuous random variable X is symmetric about a real number a (a & R) if the distribution function X-a is same as the distribution function of:
ட
രേ
ماي
ಬವ
Correct Answer:- Option-A
Question94+Let X be a random variable with pdf (x) ="~ -=
A
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1234 and 0 for other values of X. Let F(x) denote the distribution function of X. Then F(4)F(3) is:
07/07/2015 02:59 PM