You are designing a marketing plan to reach teenagers and young adults. say the that in the population, the mean response of all teenagers is µt and the mean response of all young adults is µya. the target population is 40% teenagers and 60% young adults and thus our goal is to estimate 0.4µt + 0.6µya. you will do this by creating a focus group consisting of 100 people where 64 are teenagers and 36 are young adults. call x¯t the sample mean of these 64 teenagers in your focus group and x¯ya the sample mean of the 36 young adults in your focus group. a) create an estimate of the target population's response using these two sample averages. b) if the variance of the outcome is 4, what is the mse (mean squared error) of your estimate?

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! )

true

step-by-step explanation:

answer: what are the answer choices?

step-by-step explanation:

step-by-step explanation:

a cube has 6 sides

the probability of getting 5 on the first cube is 1/6 since only one side of the cube has 5 on it.

there are 3 sides of the cube with even number on it [2,4,6]

therefore the probability of getting even number is 3/6

for both events to happen together, the probability would be

1/6 x 3/6 = 12/36

which simplifies to 1/12