Question

Based on the results of the simulation, how likely is it to get at least tails in 40 flips of a fair coin? There is only a 4% chance of getting at least 26 tails in 40 flips of a fair coin. There is only a 1% chance of getting least 26 tails in 40 flips of a fair coin. a There is a 65% chance of getting at least 26 tails in 40 flips of a fair coin. There is a 50% chance of getting at least 26 tails in 40 flips of a fair coin.

Answer 1

Step 1: Find the proportion of 40 that is 26.

Let the proportion be x.

Then, we must have

$x=\frac{26}{40}=0.65$

Step 2: Find the probability of getting at least 26 tails in 40 flips of the fair coin

From the simulation, the proportions that are at least 0.65 are 4 in number

$\begin{gathered} Pr(at\text{ least 0.65) }=\text{ Pr(0.65) + Pr(0.7)} \\ 1+3\text{ = 4} \end{gathered}$

The total number of tails is 100.

Therefore,

$\frac{4}{100}=4percent$

The correct answer is this:

There is only a 4% chance of getting at least 26 tails in 40 flips of a fair coin