Start learning 50% faster. Sign in now
Get Started with ixamBee
Start learning 50% faster. Sign in nowI. 12x2+ 22x + 8 = 0 => 12x2+ 16x + 6x + 8 = 0 => 4x(3x + 4) + 2(3x + 4) = 0 => (3x + 4) (4x + 2) = 0 => x = -4/3, -1/2 II. 4y2- y − 3 = 0 => 4y2- 4y + 3y - 3 = 0 => 4y(y – 1) + 3(y – 1) = 0 => (y – 1) (4y + 3) = 0 => y = 1, y = -3/4 Hence, relation cannot be established between x and y. Alternate Method: if signs of quadratic equation is +ve and +ve respectively then the roots of equation will be -ve and -ve. So, roots of first equation = x = -4/3, -1/2 if signs of quadratic equation is - ve and -ve respectively then the roots of equation will be +ve and -ve. (note: +ve sign will come in larger root) So, roots of second equation = y = 1, -3/4 After comparing we can conclude that relationship cannot be established between x and y.
The median of the following observations 10, 11, 9, 12, 10,10, 12, 10, 9,11 is:
For the frequency distribution of income (in lakh) of the employees in factory
Class 1.5-2.5 �...
Which one is not basis of classification of data.
If the mean and variance of a binomial distribution are 5 and 4, respectively, then the value of n is:
The second quartile for the following data 38, 39, 40, 52, 59, 67, 73, 77, 149, 248 is:
The sample sizes for two cases were 15 each with means as 104 and 114 respectively and variances as 200 and 510 respectively.
Let the null hyp...
If r and R denote correlation and multiple correlation coefficient for the data set for X1, X2 and X3 . Which option is correct?
Completely randomized design is based on the principles of _________ and randomization only.
If the second and third moment about the origin are 8 and 18 and the third moment about mean is -14 , then the first moment about the origin is: