Question
Ratio of speeds of βAβ and βBβ is 3:5,
respectively. If they participate in a 400-metre race and βBβ gives βAβ, a head start of βmβ metres, then they finish the race at the same time. Find the value of βmβ.Solution
Let the distance covered by βAβ in the time βBβ covers 400 metres be βxβ metres (x/400) = (3/5) Or, x = 240 So, m = 400 β 240 = 160 metres
For the variables X, Y and Z, rXY = 0.80, rXZ = 0.64, rY Z = 0.79 , then square of multiple correlation coefficient R2 X.Y Z 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 the first, second, and third moment about the origin are 2, 8, and 18 respectively, then third moment about mean is
If each observation is halved then the coefficient of quartile deviation
If each observation in a data set for number of employees in different divisions is doubled then the coefficient of quartile deviation:
If A and B are mutually exclusive, the general addition rule is:
X1 and X2 represent number of occurrences of event A and 8 that follow Poisson distribution with mean rate Ξ»1 and Ξ»2 , If Y1 and Y2 are inter-occurre...
Which of the following approaches does multiplicative model have for the component of Time series Secular trend (7). Seasonal variation (S), Cyclical f...
Relevant for Exams:
