Suppose we have samples of size n and m for two different normal populations. X1, X2, . . . , Xn ∼ N(µx, σ2 x ) Y1, Y2, . . . , Ym ∼ N(µy, σ2 y ) where µx, µy are unknown, but variances σ 2 x , σ2 y are known.

(a) (2pts) Construct a point estimator for the difference in means, i. e. µx − µy.

  b.   the average rate of change of f(x) is less than the average rate of change of g(x).

step-by-step explanation:

since the length of the interval is the same in each case, we only need to compare the change in y-value to see which is greater.

so the change in y-value for function f is (6 )) = 9.

the table tells us

so the change in y-value for function g is (31 -1) = 30.

the change in y-value of f(x) on the interval is less than the change in y-value of g(x) on the same interval, so the average rate of change of f(x) is less than the average rate of change of g(x).

days of the week

step-by-step explanation:

javier earned more money then kyle, so that won't always be a constant term, but the days of the week do not change so that term is always constant.

edit: i meant

fd

step-by-step explanation: