A box contains 5 detective and 15 non-detective bulbs. Two bulbs are chosen at random. Find the probability that both the bulbs are non-defective.
n(S) = C220 = 190
n(E) = C215 = 105
Therefore, P(E) = 105/190 = 21/38
Find the range and mode of the data 17, 18, 28, 19, 16, 18, 17, 29, 18
View Answer Report Error Discuss
Find the standard deviation of {11, 7, 10,13, 9}
A table tennis player, lost 12 games out of 18 games played. Calculate the games won in terms of decimal.
A sequence a, ax, ax2, ......, axn, has odd number of terms. Then the median is
The mean of a distribution is 15 and the standard deviation is 5. What is the value of the coefficient variation?
If the standard deviation of a population is 3, what would be the population variance?
The variance of a set of data is 169. Then the standard deviation of the data is
If the standard deviation of a population is 10, what would be the population variance?
Aptitude and Reasoning
General Knowledge
Puzzles
Interviews
Technical
Certifications
Exams
Job
Roles
True or False
Exams