A company has three establishments A,B and C in three cities. Analysis of the daily wages paid to the employees in the three establishments is given below: Establishments: A B C Number of employees: 20 25 40 Average daily wages: 305 300 340 Standard Deviation: 50 40 45 Find the average and standard deviation of the wages ...
SIKSHAPATH Latest Questions
In FOUR tossed of a coin , let x be the number of heads. calculate the expected values of x.
The diameter , Say X , of a electric cable , is assumed to be continuous random variable with p.d.f : f(x)= 6x(1-x) , 0<=x<=1. (1) Check that the above is a P.D.F. (2) Obtain an expression for the c. d. f. ...
Out of 800 families with 4 children each, how many families would be expected to have (1) two boys 2 girls (2) at least one boy (3) no girl (4) at most two girls ? Assume equal probabilities for boys and girls ?
Calculate Harmonic mean for the following series: (1) 10,20,25,40,50 (ii) X: 0-10 10-20 20-30 30-40 40-50 F: 8 15 20 4 3
There are three Groups A,B and C with no. of persons 50, X, 90. The mean and Standard deviations for these groups are 113, Y, 115 and 6, 7, Z respectively. The Combind n , mean and Standard deviation for three ...