A closet contains 8 pairs of shoes. If 4 shoes are chosen at random, then the probability that all the four shoes are of the same type (left or right) is :
If the equation of exponential trend with 2004 as origin is Y= 20(1.5)x , Then equation of the exponential trend with 2006 as origin is :
Moments are statistical constants from which we can find the different features of a distribution. Which one of the following is INCORRECT ?
If the trend line with 2008 as origin is Y= 20.6 + 1.68X, then the trend line with 2004 as origin is :
If A1 , A2 and A3 are three independent events with P(A1 ) = 1/3, P(A2 ) = 1/4 and P(A3 ) = 2/5, then the probability that exactly one of the events occurs is :
If the annual trend of production (Y) of a certain commodity in a factory with origin 2,000 and X unit = one year is Y= 148.8 + 7.2X Then the monthly trend equation is :
