Aresearcher finds that 15% of all commuters in a metropolitan area take the train to work. the researcher polls 250 people in the area and asks them whether they take the train to work. what is the number of trials for this binomial experiment?
15
38
250
265

250

Step-by-step explanation:

Binomial :

where n = no. of trials

           r = No. of success desired

          p = probability of getting success

          q = Probability of getting failure

Now we are given that  researcher finds that 15% of all commuters in a metropolitan area take the train to work.

So, p = 0.15

q = 1-p = 1-0.15

The researcher polls 250 people in the area

So, n = 250

So,  

So, n = 250

Since n denotes the number of trials .

So,  the number of trials for this binomial experiment is 250

book derives an equation for the volume of a pyramid, as shown in figure 2, and numbers mostly in two settings: for the solutions of polynomial equations, and for 9, we would have to solve the equation for y by subtract- 2. the point (1,. 2) is the center of the circle whose equation is x2 y2. 2x. 4y p.w.c. davies.

step-by-step explanation:

10 you would take 50/ .2

step-by-step explanation: