Question

Results of thirty two count tests each made on the yarn spun by two different ring frames are as follows

Mean count

R/F A RIF B

30.5

32.8

Variance 1.54 2.15

Using above data identify populations, parameters and calculate proper statistic to test the hypothesis whether yarns of rina frame A is coarser than that of B using 5% los. Assume that variation in the count is same for yarns of two ringframes​

Answer 1

Answer:

Determine the point which maximises or minimises the function :

U= x

2

+ xy+y2

+3z2

Subject to : z+2y +4z = 60Determine the point which maximises or minimises the function :

U= x

2

+ xy+y2

+3z2

Subject to : z+2y +4z = 60