Question
Average speed of βAβ during a 40-hour journey is 36
km/h. If he covered the first 160 km of his journey at a speed of 20 km/h, then find the speed at which βAβ travelled during the remaining journey.Solution
Total distance covered by βAβ = 40 Γ 36 = 1440 km Time taken to cover 160 km = 160/20 = 8 hours Time taken to cover remaining distance = 40 β 8 = 32 hours So, required speed = {(1440 β 160)/32} = 40 km/h
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:
