Mathematics, 06.04.2020 18:17 KayPink5723
There are 8 students. Each student has a fair quarter coin (that means the coin has two sides, head and tail, and the probability of getting a head is 0.5). Another student, whose name is Emily, asks the 8 students to flip their coins at the same time and counts the total number of heads she sees.
(1) What is the probability that Emily sees 3 heads?
a) 0.2188 b) 0.7812 c) 0.0039 d) 0.1250
(2) What is the probability that Emily sees 6 or less heads?
a) 0.8906 b) 0.0352 c) 0.1094 d) 0.9648
(3) What is the probability that Emily sees 6 or less tails?
a) 0.9648 b) 0.1445 c) 0.8555 d) 0.0352
(4) What is the probability that Emily sees between 2 (inclusive) and 6 (inclusive) heads?
a) 0.2734 b) 0.1797 c) 0.9298 d) 0.8203
Answers: 1
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