Suppose the true average growth µ of one type of plant during a 1–year period is identical to that of a second type, but the variance of growth for the first type is σ2, whereas for the second type, the variance is 4σ2. let x1, be m independent growth observations of the first type, and let y1, be n independent growth observations on the second type.(a) what are the values of e[xi], var(xi), e[yj], and var() show that for any δ between 0 and 1, the estimator ˆ µ = δ ¯ xm + (1−δ)¯ yn is unbiased for µ.(c) for fixed m and n, compute var(ˆ µ), and then find the value of δ the minimizes var(ˆ µ).

c) the median for town a 30" is greater than the median for town b 25"

step-by-step explanation:

town a, median = q2 = 30

town b, median - q2 = 25

so the median for town a 30" is greater than the median for town b 25"

b

step-by-step explanation:

the equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, 4) and (x₂, y₂ ) = (3, - 5) ← 2 points on the line

m = = = - 3

with m = - 3 and (a, b) = (3, - 5), then

y - (- 5) = - 3(x - 3), that is

y + 5 = - 3(x - 3) → b

angle efh= angle egh