ICS Part 2 Statistics Online Test With Answers

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ICS Part 2 Statistics Online Test

Sr. # Questions Answers Choice
1 The power of the test is equal to: α 1 - α β 1 - β
2 Which hypothesis is always in an inequality form? Simple hypothesis Alternative hypothesis Null hypothesis Composite hypothesis
3 P(type II error) is equal to: α β 1 - α 1 - β
4 P(type I error) is equal to: 1 - α 1 - β α β
5 Level of significance is also called: Power of the test Size of the test Level of confidence Confidence coefficient
6 1 - α is the probability associated with: Type-I error Type-II error Level of confidence Level of significance
7 1 -&=nbsp;α is call: Confidence coefficient Power of the test Size of the test Level of significance
8 The choice of one-tailed test and two tailed test depends upon: Composite hypothesis Null hypothesis Alternative hypothesis Simple hypothesis
9 A hypothesis that specifies all the value of parameter is called: Statistical hypothesis Simple hypothesis Composite hypothesis None of these
10 The alternative hypothesis is also called: Null hypothesis Statistical hypothesis Research hypothesis Simple hypothesis
11 A quantitative statement about a population is called: Research hypothesis Composite hypothesis Simple hypothesis Statistical hypothesis
12 A statement about the value of a population parameter is called: Null hypothesis Alternative hypothesis Simple hypothesis Composite hypothesis
13 If 1-α = 0.90, the value of Za/2 is: 1.645 1.96 2.326 2.575
14 The following statistic are unbiased estimators: The Sample mean S<sup>2</sup> =&nbsp;Σ(X - X)<sup>2</sup>/n-1 The sample proportion All the above
15 The distance between an estimate and the estimated parameter is called: Sampling error Standard error Bias Error of estimation
16 By increasing the sample size, the precision of confidence interval is: Decreased Increased Constant Unchanged
17 If (1-α) is increased, the with of a confidence interval is: Decreased Increased Constant Same
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