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Time taken by X to reach from point A to B = 4 hrs Distance travelled by Y in 3 hours to reach from point B to C = 210 km Speed of Y = 210/3 = 70 kmph Distance from point A to B = 210 + 210 × 1/7 = 240 km Speed of X = 240/4 = 60 kmph Therefore, Time taken by X to reach from point A to C = (240 + 210)/60 = 450/60 = 7.5 hrs
Let MSA defines mean sum of squares due to factor A and MSE defines mean sum of squares due to error. If the null hypothesis of ANOVA for one way class...
If Arithmetic mean and coefficient of variation of x are 10 and 40 respectively, then the variance of y = 10 – 2x is:
If the mean and variance of a binomial distribution are 5 and 4, respectively, then the value of n is:
If the difference between the rank of the 4 observations are 2.5, 0.5, -1.5, -1.5, then Spearman's rank correlation coefficient equals to:
By the method of moving averages, the seasonal index for four quarters equals to:
X and Y are independent normal variables with mean 50 and 80 respectively and standard deviation as 4 and 3 respectively. What is the distribution o...
If each observation in a data set for number of employees in different divisions is doubled then the coefficient of quartile deviation: