(b) The signals {x[0]. . „x[N – 1]} are observed, that are independent and normally distributed with a zero mean and a variance of a². To estimate the variance, we use the following estimator: az x²[n]. Explain if this is an unbiased estimator.

Q: 3y² - 2y-1 (-)-5y²- 2y +6

A:

Q: S 2x - 5y 4 6x - 4y 3.

A:

Q: a3-16a

A: a³−16a ⇒a(a²−16) ⇒a(a² −4²) ⇒a(a+4)(a−4)

Q: C3x2 + – 4 kx - 5x- 6.

A:

Q: 4x e 3x

A: I = ∫4x e−3x dx

Q: x² ,2 xp V16-x2

A:

Q: 8x) dr

A:

Q: 12 R 10 5

A:

Q: 1b+1b

A: Applying  addition operation since terms with same variable  binomial addition

Q: 2 3x+ АВ w B 10 O 20

A:

Q: 36-9z

A: Given that:36-9z

Q: 8P4 11C7

A:

Q: 12 16

A: We know that If a perpendicular is drawn from the vertex of right angle triangle of a right triangle…

Q: 4a5b• V18a3b6

A: We have to find

Q: how did you get 2x in part c?

A: Joint probability density is used to understand the probability value of several continous random…

Q: REVIEW: 16) Given: X is the midpoint of both AD and BC. Prove: AABX = ADCX 1) X is the midpoint of…

A: