A vehicle registration number consists of 2 letters of English alphabet followed by 4 digits, where the first digit is not zero. Then, the total number of vehicles with distinct registration numbers is
If the mean and variance of a binomial distribution are 4 and 2, respectively. Then, the probability of atleast 7 successes is
Mean and standard deviation from the following observations of marks of 5 students of a tutorial group (marks out of 25)
8,12,13,15,22 are
14, 4.604
15, 4.604
14, 5.604
None of these
The relationship between the correlation coefficient r and the regression coefficients bxy and byx, is
If then the coefficient of correlation is
0.4
0.3
0.2
0.1
C.
0.2
If the coefficient of correlation between two variables is 0.32, covariance is 8 andvariance of x is 25, then variance of y is
36
25
64
None of these