In FOUR tossed of a coin , let x be the number of heads. calculate the expected values of x.
SIKSHAPATH Latest Questions
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 ?
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 ...
The following data is given for variable values and frequencies x: 0,1,2,3,4,5,6,7,8 and frequencies f: 1,8,28,56,70,56,28,8,1. Find Mu one, Mu two, Mu three and Beta two of the distribution.
Question 1 2 Points The heights of persons with No. of persons is given , Heights (in Cm ): 58, 59, 60, 61, 62, 63, 64, 65 and No. of persons : 10, 18, 30, 42,35, 28, 16, 8 . Find ...