If the economy booms, meyer& co. stock will have a return of 18.5 percent. if the economy goes into a recession, the stock will have a loss of 7.6 percent. the probability of a boom is 71 percent while the probability of a recession is 29 percent. what is the standard deviation of the returns on the stock?

11.84% approx.

Step-by-step explanation:

Expected return = Respective return × Respective probabilities

                           = (18.5 × 0.71) + (-7.6 × 0.29)

                           = 10.931%

Probability          Return          Probability ×(Return - expected return)²

0.71                         18.5               0.71×(18.5 - 10.931)² = 40.67573

0.29                        -7.6               0.29×(-7.6 - 10.931)² = 99.585409

                                                             Total                = 140.261139%

=

= 11.84319 ≈ 11.84% approx.

the answer   is 200

step-by-step explanation:

this is a problem about poisson probabilities.   i don't know if you've

already studied poisson distributions, or if you have a place to look

to read more about the subject.  

here's how you can see a poisson distribution coming.   when there are

a lot of events that may happen at any time (or any place), and when

you're counting how many of them happen at a particular time (or a

particular place), and each event is independent of the others, then

the result is a poisson distribution.   this is roughly true for the

chocolate chips; one chip being in a cookie has only a small effect on

the probability that another chip will be in the cookie.

once you know you have a poisson distribution, you know a lot.   there

is only one parameter to a poisson distribution, so if you know the

mean, you know everything.   the form of the distribution is

  probability of n chips = {[e^(-x)]*(x^n)} / (n! )

answer: my brother can figure it out, imma go get him so i can answer : ) edit: my brother is sleeping, sorry man

step-by-step explanation: