Color-blind men About $7\%$ of men in the United States have some form of red-green color blindness. Suppose we randomly select one U.S. adult male at a time until we find one who is red-green color-blind. Should we be surprised if it takes us $20$ or more men? Describe how you would carry out a simulation to estimate the probability that we would have to randomly select $20$ or more U.S. adult males to find one who is red-green color blind. Do not perform the simulation.

We need to find that who is red-green color blind.

A person with red-green color blindness has a $7\%$chance of being chosen, which amounts to around $7$out of every $100$persons.

$7\%=\frac{7}{100}$

• Using slips of paper, a random digits table, or a random number generator, generate $2$-digit numbers at random.
• Choose the first of the two-digit numbers. The person has red-green color blindness if the number is between $00$and $06$(inclusive); otherwise, the person does not have red-green color blindness.
• Repeat till we have an individual that is colorblind in both red and green.
• We kept track of how many numbers were needed until we found a red-green colorblind person.

Repeat as many times as necessary, estimating the likelihood as the proportion of trials that required $20$or more to achieve a red-green colorblind person.