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Start learning 50% faster. Sign in nowI. 2x2 + 3x - 9 = 0 => 2x2 + 6x – 3x - 9 = 0 => 2x(x + 3) – 3(x + 3) = 0 => (x + 3) (2x - 3) = 0 => x = -3, 3/2 II. 3y2 - y - 10 = 0 => 3y2 - 6y + 5y – 10 = 0 => 3y(y - 2) + 5(y - 2) = 0 => (y - 2) (3y + 5) = 0 => y = 2, -5/3 Hence, the 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:
