BSc CS Sem 2 BSc CS Semester 2 (2020 2021) 2020-21 Statistical Metods And Tesing Of Hypothesis Question Paper - Mumbai University | munotes

Questions asked in this paper

1. Q1 A variable which can assume finite or countably infinite number of values is known
   • a) continuous
   • b) discrete
   • c) qualitative
   • d) Quantitative
2. Q2 For Probability mass function , following condition /conditions satisfied
3. Q3 The cumulative distribution function ranges from
   • a) Oto
   • d) to + 00
4. Q4 Which of the following statement is false for cumulative distribution function F(x)?
   • a) F(x) is non-decreasing function
   • b) F(x) ranges from 0 to 1
5. Q5 The value of expected value E(x) is equal
   • a) Mean
   • b) Variance
   • c) Standard deviation
   • d) Covariance
6. Q6 Which of the following statement is false for Variance?
   • b) Var (c) =0, where c is constant
7. Q7 In Binomial probability distribution, the successive trials are
   • a) Dependent
   • b) Independent
   • c) mutually exclusive
   • d) fixed
8. Q8 which of the following is true for normal curve
   • a) Only symmetric
   • b) Only unimodal
9. Q9 is the mean of a Poisson Distribution, the variance is given by 10)t distribution parameter
   • a) Two
   • b) Only one
   • c) Zero
   • d) No fixed
10. Q11 Any hypothesis which is tested for the purpose of rejection under the assumption that it is true is called
    • a) Null hypothesis
    • b) Alternative hypothesis
    • c) Statistical hypothesis
    • d) Composite hypothesis
11. Q12 The probability of rejecting the null hypothesis when
    • a) Level of confidence
    • b) Level of significance
    • c) Power of the test
    • d) Difficult to tell
12. Q13 Test of hypothesis Ho: against H1:
    • d) Difficult to tell
13. Q14 The probability associated with committing
14. Q15 Analysis of variance is a statistical method of comparing the _ of several
    • a) standard deviations
    • b) variances
    • c) means
    • d) proportions
15. Q16 The number of independent values in a set of values is called:
    • a) Test-statistic
    • b) Degree of freedom
    • c) Level of significance
    • d) Level of confidence
16. Q17 In Student’s distribution, HOis
17. Q18 When testing for serial randomness, we can use
    • b) sign test
    • c) Run test
    • a) Always follow
    • b) Never follow
    • c) May follow
    • d) Difficult to tell
18. Q20 Following test is used when population Standard deviation is unknown
    • a) t-test
    • b) F-test
    • d) Z-test
19. Q21 Which of the following statement is true for Non-parametric tests?
    • b) Less accurate than non-parametric tests
    • c) Used for large sample size
    • d) Used for ratio data
20. Q22 Which of the following non-parametric is equivalent of an un-paired samples t-test ?
    • a) Sign test
21. Q23 In testing for the difference between two population, it is possible to
    • b) Sign test
    • c) Either Wilcoxon rank-sum test or sign test
22. Q24 Non-parametric tests not include
    • a) Student's t-test
23. Q25 x? variable for 2x2 table is defined as,

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