Foundation PN-3 FBMS Quiz 7

1. If p: q are the odds in favour of an event, then the probability of that event is :

2. Sum of probability of an event A and its complement is  

3. If an unbiased coin is tossed once, then the two events head and tall are:

4. A survey by Air travelers’ association revealed that 60% of its member made airline reservations last year. Two members are selected at random. The probability that both the members made airline reservations last year is :

5. When two events happen simultaneously which of the following is true?

6. In IPL Kolkata Knight Riders plays 70% of their games at night (8 O’clock slot) and 30% during the day (4 O clock slot). The team wins 50% of their night games and 90% of their day games. According to today’s newspaper they own yesterday. The probability that the game was played at night is :

7. If P (A ) = 0.3,P(B) = 0.2 and P (C )= 0.1, then assuming A,B and C are independent events, the probability of occurrence of at least one of the three events is :

8. A lot contains 10 items of which 3 are defective. Three items are chosen from the lot at random one after another without replacement. The probability that all the three are defective is

9. The probability that a leap year selected at random contain 53 Sundays is :

10. If two unbiased coins are tossed once, the probability of getting both the heads is

11. Addition rule for mutually exclusive events A & B is :

12. Classical probability is :

13. If an experiment has a set of events that includes every possible outcomes, then the set is called :

14. Classical probability is based on the assumption that :

15. For an event Odds in favour are “five to two” This means that :

16. “Sun will disappear from blue sky today forever”. With our available information & belief which one of the following value is most appropriate as probability to this event?

17. The probability of two events A and B are 0.05 and 0.95 respectively. We can infer that

18. In general probability is :

19. Probability theory is often referred to as :

20. In a bivariate analysis if two regression equations are 8x – 10y + 66 = 0 & 40x – 18y – 214 = 0. Then x , y, the mean of the series ˉx & ¯y care respectively :

21. In a bivariate analysis if two regression equations are mx – y + 10 = 0 & – 2x + 5y = 14. If coefficient of correlation 1 between x & y is 1/√10 then value of m is:

22. Consider the following results: N = 6, Σy = 42, Σy² = 318, byx =−11/34, Σx² −1/n(Σx)² = 34 Then bxy is

23. In a bivariate regression analysis for dependent variable if d = Actual value – Predicted value  then at different values of independent variable

24. Consider  the  following  results: N = 12, Σdx = 0, Σdy = 4, Σdx² = 1344, Σdy² = 215, Σdxdy = – 4360 Appropriate regression coefficient is -

25. In a bivariate regression analysis, the difference between actual value of dependent variable and the predicted value of the dependent variable is called