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Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'RANGE FOREST OFFICER' And exam conducted in the year 21. And Question paper code was '059/21'. 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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059/21
Total Number of Questions : 32
Time : 3.00 Hours
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Define harmonic mean.
. What is regression ?
. State addition theorem on probability for two events.
Define normal distribution. ۔
. State sufficient set of conditions for consistency of an estimator.
. Define probabilities of type | and type ॥ errors.
. Write any two properties of moment estimators.
. Define Karl-Pearson’s coefficient of skewness.
Define chi-square distribution with n degrees of freedom. ۔
. Obtain the mean of Poisson distribution with parameter A.
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. If Aand 8 are two events such that निधू, = and १५० =. Find P(A/B) and
P(A/B*).
A continuous random variable X has the probability density function f(x) = 3×۷, 0 > × > Find
the value of a such that P(X < a) = P(X >a).
Explain the best test for a simple hypothesis.
Explain the chi-square test for the variance of a normal population.
Explain method of moment estimation.
State Gauss-Markov theorem.
What are the basic assumptions used in analysis of variance ?
Define the following :
(a) Test statistic
(b) Critical region
(c) Level of significance
(d) pvalue.
Max. Marks : 200
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