Question
For the given data, n=20, X̅ = 40, Y̅ = 60,
∑(X-10)2 = 100, ∑(Y-30)2 =160 and ∑(X-10)*(Y-30) = 80. Calculate the regression coefficient of Y on XSolution
The ratio of two numbers is 4:8 and their LCM is 64. The numbers are:
The average selling price of mangoes is Rs. 8 (per kg) more than the average selling price of the oranges. The quantity of oranges sold is 25% more than...
‘X’ and ‘Y’ are capable of finishing a work in 9 days and 12 days respectively. They worked together for 3 days. Find the number of days ‘Y’...
An LPP has constraints:
x + y ≤ 4
x + y ≥ 6
x, y ≥ 0
What can be said about the feasible region?
Amit can complete a task alone in 20 days. Bheema and Chetna, working together, can complete the same task in 12 days. The ratio ...
A and B can do a work together in 10 days. B and C can do the same work in 15 days, how many days will B take to complete the work if A, B and C togethe...
In a 1000 metres race, 'P' beats 'Q' by 150 metres, while 'Q' beats 'R' by 100 metres. Find the distance by which 'P' beats 'R' i...
The value of 0∫π cos3x dx is –
Let a point P(at² , 2at)lie on parabola y² = 4ax. The line joining P and focus intersects the directrix at M. If t=2, then the coordinates of M are:...
A rectangular park is 120 m long and 80 m wide. A path of uniform width is constructed inside the park. If the area of the path is 3600 m², find the wi...
