Question
A fair coin is tossed 40 times with the results being either heads or tails. How many times should the results be heads​?
Question content area bottom
Part 1
A.40
40
B.30
30
C.35
35
D.20
20
Question content area bottom
Part 1
A.40
40
B.30
30
C.35
35
D.20
20
Answers
GPT-4o mini
In a fair coin toss, the expected probability of getting heads is 0.5 (or 50%). When you toss a coin 40 times, you can calculate the expected number of heads by multiplying the total number of tosses by the probability of heads:
\[
\text{Expected number of heads} = \text{Total tosses} \times \text{Probability of heads} = 40 \times 0.5 = 20
\]
Therefore, the expected number of times the results should be heads is:
**D. 20**
\[
\text{Expected number of heads} = \text{Total tosses} \times \text{Probability of heads} = 40 \times 0.5 = 20
\]
Therefore, the expected number of times the results should be heads is:
**D. 20**