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Start learning 50% faster. Sign in nowI. x² - 33x + 270 = 0 x² - 18x - 15 x + 270 = 0 x (x – 18) - 15 (x – 18) = 0 (x – 18) (x – 15) = 0 x = 18, 15 II. y² - 41y + 414 = 0 y² - 18y - 23 y + 414 = 0 y (y – 18) – 23 (y - 18) = 0 y = 18, 23 Hence, x ≤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: