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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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

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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 = (c_{2}^{7}) . \cdot {(0.49)}^{2} {(0.51)}^{7}

21 \cdot 0.2401 \cdot 0.034503

0.173965

Thus,

p = 0.173965

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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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