Answered You can hire a professional tutor to get the answer.
A computer saves a block of data onto a blank CD. When a zero is written, the reflective medium is left unchanged.
5. A computer saves a block of data onto a blank CD. When a zero is written, the reflective
medium is left unchanged. However, to write a one, maximum laser power is employed to
heat the material and make it lose its reflectivity. Assume that a block of 7 bits is written to
the CD. Every bit is either a zero or a one with equal probability, and they are independent
of one another. We use B1;B2, ... ,B7 to denote the value of the original bits.
(a) Let N be the total number of ones within the set {B1,B2;...;B7}. Find the
PMF distribution of random variable N.
(b) Find the expected value of N.
