It is estimated that 20% of the population of Gingerland have red hair. If 8 residents are chosen at random, what is the probability that... (assume each person is
independent)
a) exactly 6 of them have red hair?
b) less than 6 of them have red hair?
c) at least one of them has red hair?
Round your answers to the nearest thousandth (3 decimal places).
answer part (a) only in this blank.
Your
.001
Answer
Question 7 (1 point)
Answer 6(b) here:
Question 8 (1 point)
Answer 6(c) here:

The approximate line of best fit for the given data points, y = −2x − 2, is shown on the graph.which is the residual value when x = –2? a)–2 b)–1 c)1 d)2

If p(x) is the total value of the production when there are x workers in a plant, then the average productivity of the workforce at the plant is a(x) = p(x) x . (a) find a'(x). a'(x) = xp'(x) − p(x) x a'(x) = xp'(x) − p(x) x2 a'(x) = p'(x) − p(x) x a'(x) = xp'(x) − p'(x) x2 a'(x) = p'(x) − xp(x) x2 why does the company want to hire more workers if a'(x) > 0? a'(x) > 0 ⇒ a(x) is ; that is, the average productivity as the size of the workforce increases. (b) if p'(x) is greater than the average productivity, which of the following must be true? p'(x) − xp(x) > 0 p'(x) − xp(x) < 0 xp'(x) − p'(x) > 0 xp'(x) − p(x) < 0 xp'(x) − p(x) > 0

Solve the system of equations. 2x-2y=-4 and x+y=8. show work