Let x and y be random variable such that the mean and variance of X are 2 and 4. respectively, while the mean and variance of y are 6 and k, respectively. A sample of size 4 is taken from the...

 Let x and y be random variable such that the mean and variance of X are 2 and 4. respectively, while the mean and
variance
 of y are 6 and k, respectively. A sample of size 4 is taken from the x-distribution and a sample of size 9 is taken from the y-distribution .If p[(
x-y
)>8]=0.0228,then what is the value of the constant k?