- Per capita income is a measure of the level of income per person in a country. The
higher the per capita income, the "weathier" the residents of that country.
Infant mortality is a measure of the number of infants per thousand live births who die
before their first birthday. There is a correlation between per capita income and infant
mortality rates.

The data graphed at the right produces a correlation of r = -0.51. How much of the variation in the per capita income explains the variation in the infant mortality rate?

- What is the probability of rolling a 2 on six-sided die?

- A twelve-sided die has the numbers 1 through 12 on its faces. What is the probability of
rolling a multiple of 3 (3, 6,...)?

- My nephew thinks there will be a 50% chance of rain tomorrow. What method of assigning
probabilities is he likely using?

- What is the probability of rolling a 7 on a regular six-sided die?

- Circle each and every number below that could be a valid probability value:

-0.56 v 0.00 v 0.137 v 1.000 v 5.03 v 500% v 1/2 v 5/4

- Bear in mind that the following is an oversimplification of the complex biogenetics of
achromatopsia for the sake of a statistics example. Achromatopsia is controlled by a pair
of genes, one from the mother and one from the father. A child is born an achromat when
the child inherits a recessive gene from both the mother and father.

**A**is the dominant gene,**a**is the recessive gene

**AA**has "normal" vision,**Aa**is termed a carrier and has "normal" vision,**aa**has achromatopsia.

Mate a carrier mother Aa with an achromat father aa.- What is the probability of a child being born with "normal" vision?"

- What is the probability of a child being born with achromatopsia?

- What is the probability of a child being born with "normal" vision?"
- What is the name of the man on the United States penny?

- In College courses there are five grades: A, B, C, D, F. Each student gets only one
grade. One outcome, five total possibilities. So is the probability of getting an A in any
given course 0.20?

Why or why not?