Question

Among a student group 49% use Google Chrome, 20% Internet Explorer, 10% Firefox, 5% Mozilla, and the rest use Safari. What is the probability that you need to pick 7 students to find 2 students using Google Chrome

Answer 1

Answer:

17.39%

Step-by-step explanation:

We can summary the question:

• Probability of students using Google chrome= 0.49

• Probability of students using other browsers = 0.51

So the probability that you need to pick 7 students to find 2 students using Google Chrome is:

P(G) = $C^{7} _{2}$ * ($0.49^{2}$)($0.51^{7}$) = 21*0.2401*0.03 = 0.1739 = 17.39%