Question
Before servicing, a car runs at a speed of 25 km/hr
while after servicing, it runs at a speed of 50 km/h. After servicing the car covers a certain distance in 8 hours. How much time would the car have taken to cover the same distance when it was not serviced?Solution
After servicing, Distance covered by the car = 50 × 8 = 400 km Required time taken = 400/25 = 16 hours
Let X and Y be two related variables. The two regression lines are given by x-y+1=0 and 2x-y+4=0. The two regression lines pass through the point:
Which of the following test is used for Multicollinearity?
A firm sells 40 units of commodity X when its price is 10. At what price it will sell 60 units of the commodity if its price elasticity of supply is 0....
The GDP’s (at factor cost) and population sizes of two countries A and B were identical in a particular year. Which of the following statements is the...
In hypothesis testing, failing to reject a false null hypothesis is known as:
Within the AD-AS model, a phenomenon known as stagflation is best represented by a shift in which curve, and with what consequence for the short-run equ...
A "Pigouvian tax" is designed to correct for:
Let the correlation coefficient between X and Y be 0.6. Random variables Z and W are defined as Z=X+5 and W=Y/3. What is the correlation coefficient bet...
For a positively sloped LM curve, which of the following statements is CORRECT?
According to the graph on the right, the equilibrium price in the market before the tax is imposed is
