Q.7040·Miscellaneous·2018·EasyIn a Binomial distribution, the mean is three times its variance. What is the probability of exactly 3 successes out of 5 trials?View question
Q.7041·Miscellaneous·2018·EasyIf the correlation coefficient between x and y is 0.6, covariance is 27 and variance of y is 25, then what is the variance of x?View question
Q.7042·Miscellaneous·2018·EasyThe probabilities that a student will solve Question A and Question B are 0.4 and 0.5 respectively. What is the probability that he solves at least one of the two questions?View question
Q.7043·Miscellaneous·2018·EasyConsider the following statements : 1.Mean is independent of change in scale and change in origin. 2.Variance is independent of change in scale but not in origin. Which of the above statements is/are correct ?View question
Q.7044·Miscellaneous·2018·EasyConsider the following statements : 1.The sum of deviations from mean is always zero. 2.The sum of absolute deviations is minimum when taken around median. Which of the above statements is/are correct ?View question
Q.7045·Miscellaneous·2018·EasyIn a test in Mathematics, 20% of the students obtained “first class”. If the data are represented by a Pie-Chart, what is the central angle corresponding to “first class” ?View question
Q.7046·Miscellaneous·2018·EasyThe mean and standard deviation of a set of values are 5 and 2 respectively. If 15 is added to each value, then what is the coefficient of variation for the new set of values ?View question
Q.7047·Miscellaneous·2018·EasyA train covers the first 5 km of its journey at a speed of 30 km/hr and the next 15 km at a speed of 45 km/hr. What is the average speed of the train ?View question
Q.7048·Miscellaneous·2018·EasyTwo fair dice are rolled. What is the probability of getting a sum of 7 ?View question
Q.7049·Miscellaneous·2018·EasyIf A and B are two events such that 2P(A) = 3P(B), where 0 < P(A) < P(B) < 1, then which one of the following is correct ?View question
Q.7050·Miscellaneous·2018·EasyA box has ten chits numbered 0, 1, 2, 3, ..., 9. First, one chit is drawn at random and kept aside. From the remaining, a second chit is drawn at random. What is the probability that the second chit drawn is “9” ?View question
Q.7051·Miscellaneous·2018·EasyOne bag contains 3 white and 2 black balls, another bag contains 5 white and 3 black balls. If a bag is chosen at random and a ball is drawn from it, what is the chance that it is white ?View question
Q.7052·Miscellaneous·2018·EasyConsider the following in respect of two events A and B : 1.P(A occurs but not B) = P(A) - P(B) if B ⊂ A 2.P(A alone or B alone occurs) = P(A) + P(B) - P(A ∩ B) 3.P(A ∪ B) = P(A) + P(B) if A and B are mutually exclusive Which of the above is/are correct ?View question
Q.7053·Miscellaneous·2018·EasyA committee of three has to be chosen from a group of 4 men and 5 women. If the selection is made at random, what is the probability that exactly two members are men ?View question
Q.7054·Miscellaneous·2018·EasyWhich one of the following is NOT true for bleaching powder?View question
Q.7056·Miscellaneous·2018·EasyWhich one of the following is an organelle that is NOT found in prokaryotic cells?View question