Question

Karla tosses a penny 20 times.



How many times is the penny most likely to land heads up?

Answer options with 5 options
A.
0

B.
2

C.
5

D.
10

E.
20

Answer 1

D. 10

Explanation: For 20 fair tosses the binomial mean is 20(0.5)=10, and the most likely number (the mode) is floor((n+1)p)=floor(21·0.5)=10.