About 8% of males are colorblind. A researcher needs some colorblind subjects for an experiment and begins checking potential subjects. a) On average, how many men should the researcher expect to check to find one who is colorblind? b) What’s the probability that she won’t find anyone colorblind among the first 4 men she checks? c) What’s the probability that the first colorblind man found will be the sixth person checked? d) What’s the probability that she finds someone who is colorblind before checking the 10th man?

About 8% of males are color-blind. A researcher needs some color-blind subjects for an experiment and begins checking potential subjects.

What's the probability that she finds someone who is colorblind before checking the 10th man?

About 8% of males are color-blind. A researcher needs some color-blind subjects for an experiment and begins checking potential subjects.

What's the probability that she won't find anyone color-blind among the first 4 men she checks?

An Olympic archer is able to hit the bull's-eye 80% of the time. Assume each shot is independent of the others. If she shoots 6 arrows, what's the probability of the following result? She gets exactly 4 bull's-eyes.

About 8% of males are color-blind. A researcher needs some color-blind subjects for an experiment and begins checking potential subjects.

On average, how many men should the researcher expect to check to find one who is color-blind?

About 8% of males are color-blind. A researcher needs some color-blind subjects for an experiment and begins checking potential subjects.

What's the probability that the first color-blind man found will be the sixth person checked?

About 8% of males are colorblind. A researcher needs some colorblind subjects for an experiment and begins checking potential subjects. On average, how many men should the researcher expect to check to find one who is colorblind?

Write each power as a product of the same factor. Then find the value.

$$\left( \frac { 1 } { 4 } \right) ^ { 3 } =$$

Justine works for an organization committed to raising money for Alzheimer’s research. From past experience, the organization knows that about 20% of all potential donors will agree to give something if contacted by phone. They also know that of all people donating, about 5% will give $100 or more. On average, how many potential donors will she have to contact until she gets her first$100 donor?

What is the dealer’s average profit per automobile if the profit on each automobile is given by $g(X) = X^2$, where X is a random variable having the density function $f(x)=2(1-x)$, for $0 \lt x \lt 1$, $f(x)=0$, elsewhere,

For a recent period of 100 years, there were 93 major earthquakes (at least 6.0 on the Richter scale) in the world (based on data from the World Almanac and Book of Facts). Assuming that the Poisson distribution is a suitable model, find the mean number of major earthquakes per year, then find the probability that the number of earthquakes in a randomly selected year is 3.

In the example above, what percent of his time does Mike spend sorting mail?

Choose the best answer. A set of 10 cards consists of 5 red cards and 5 black cards. The cards are shuffled thoroughly, and you choose one at random, observe its color, and replace it in the set. The cards are thoroughly reshuffled, and you again choose a card at random, observe its color, and replace it in the set. This is done a total of four times. Let X be the number of red cards observed in these four trials. The random variable X has which of the following probability distributions? (a) The Normal distribution with mean 2 and standard deviation 1 (b) The binomial distribution with n = 10 and p = 0.5 (c) The binomial distribution with n = 5 and p = 0.5 (d) The binomial distribution with n = 4 and p = 0.5 (e) The geometric distribution with p = 0.5

Suppose a computer chip manufacturer rejects 2% of the chips produced because they fail presale testing. What's the probability you find a bad one within the first 10 you examine?