Among a student group 49% use Google Chrome, 20% Internet Explorer, 10% Firefox, 5% Mozilla, and the latter use Safari. What is the probability that you need to pick 7 students to find 2 students using Google Chrome? Report answer to 3 decimals.

BenoguigoliB 2021-02-01 Answered
Among a student group 49% use Google Chrome, 20% Internet Explorer, 10% Firefox, 5% Mozilla, and the latter use Safari. What is the probability that you need to pick 7 students to find 2 students using Google Chrome? Report answer to 3 decimals.
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Expert Answer

gotovub
Answered 2021-02-02 Author has 98 answers
Step 1
Probability of students using Google chrome =0.49
Probability of students using other browsers =0.51
Step 2
Probability that there is exactly two students using google chrome in a sample of 7 is given by
P=(c27).(0.49)2(0.51)7
210.24010.034503
0.173965
Thus, p=0.173965
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