please solve comple question 1 and 2 on page complete

Question 1. Part {a} The pixels in a 3 x 3 image subclock are as follows: U'I-lh-LAJ e-oo: LilEM Estimate the unknown pixel in the center, using both a mean and a median estimator. Part {b} Ftepeat the above for the block 1 1.5 2 1 ? 2D 15 2 3 Comment on the result. Question 2. Find and sketch the PDF of the following signals: Part {a} A random sample that is equally likely between D and 5. Part {b} A cosine waveform with known amplitude, frequency and phase. Part to} A square waveform of duty cycle 'ts. Part {d} A square waveform of duty cycle 19%