Question
A fair coin is tossed 30 times with the results being either heads or tails. How many times should the results be tails​?
Question content area bottom
Part 1
A.20
20
B.30
30
C.15
15
D.25
25
Question content area bottom
Part 1
A.20
20
B.30
30
C.15
15
D.25
25
Answers
GPT-4o mini
When a fair coin is tossed, the outcomes of heads and tails are equally likely. Therefore, the expected number of tails when a coin is tossed 30 times can be calculated as follows:
\[
\text{Expected Tails} = \frac{1}{2} \times \text{Total Tosses} = \frac{1}{2} \times 30 = 15
\]
So, the answer is:
C. 15
\[
\text{Expected Tails} = \frac{1}{2} \times \text{Total Tosses} = \frac{1}{2} \times 30 = 15
\]
So, the answer is:
C. 15