a researcher finds that 15% of all commuters in a metropolitan area take the train to work. the researcher…

a researcher 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?\n15\n38\n250\n265

a researcher 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?\n15\n38\n250\n265

Answer

Explanation:

Step1: Recall binomial trial concept

In a binomial experiment, the number of trials is the number of independent observations. Here, each person polled is an independent observation.

Step2: Identify number of trials

The researcher polls 250 people. So the number of trials is 250.

Answer:

250