Licensed Drivers in the United States In a recent year there were the following numbers (in thousands) of licensed drivers in the United States.

	Male	Female
Age $19$ and under	$4746$	$4517$
Age $20$	$1625$	$1553$
Age $21$	$1679$	$1627$

Choose one driver at random. Find the probability that the driver is
b. Age $20$ or female

The percentage of licensed U.S. drivers (from a recent year) that are female is $48.60$. Of the females, $5.03 \%$ are age 19 and under; $81.36 \%$ are age $20-64 ; 13.61 \%$ are age 65 or over. Of the licensed U.S. male drivers, $5.04 \%$ are age 19 and under; $81.43 \%$ are age $20-64 ; 13.53 \%$ are age 65 or over.

Complete the following.

Find $P$ (driver is female).

In a recent year, there were the following numbers (in thousands) of licensed drivers in the United States.

Choose one driver at random. Find the chance that the driver is

a. Male and 19 years or under

b. Age 20 or female

c. At least 20 years old

The percentage of licensed U.S. drivers (from a recent year) that are female is $48.60$. Of the females, $5.03 \%$ are age 19 and under; $81.36 \%$ are age $20-64 ; 13.61 \%$ are age 65 or over. Of the licensed U.S. male drivers, $5.04 \%$ are age 19 and under; $81.43 \%$ are age $20-64 ; 13.53 \%$ are age 65 or over.

Complete the following.

Find $P$ (driver is age 65 or over $\mid$ driver is female).

Multiple Births The number of multiple births in the United States for a recent year indicated that there were $128,665$ sets of twins, $7110$ sets of triplets, $468$ sets of quadruplets, and $85$ sets of quintuplets. Choose one set of siblings at random.
Find the probability that it represented more than two babies.

Multiple Births The number of multiple births in the United States for a recent year indicated that there were $128,665$ sets of twins, $7110$ sets of triplets, $468$ sets of quadruplets, and $85$ sets of quintuplets. Choose one set of siblings at random.
Find the probability that it represented quads or quints.

Multiple Births The number of multiple births in the United States for a recent year indicated that there were $128,665$ sets of twins, $7110$ sets of triplets, $468$ sets of quadruplets, and $85$ sets of quintuplets. Choose one set of siblings at random.
Now choose one baby from these multiple births. What is the probability that the baby was a triplet?

According to the Bureau of the Census, the following statistics describe the number (in thousands) of young adults living at home or in a dormitory in the year 2004.

| | Ages 18-24 |Ages 25-34 | -| | Male | 7922 | 2534 | Female | 5779 | 995|

Select one student at random. Find the possibility that the student is

a. A female student aged 25-34 years

b. Male or aged 18-24 years

c. Under 25 years of age and not make

The percentage of licensed U.S. drivers (from a recent year) that are female is $48.60$. Of the females, $5.03 \%$ are age 19 and under; $81.36 \%$ are age $20-64 ; 13.61 \%$ are age 65 or over. Of the licensed U.S. male drivers, $5.04 \%$ are age 19 and under; $81.43 \%$ are age $20-64 ; 13.53 \%$ are age 65 or over.

Complete the following.

In words, explain the difference between the probabilities in part c and part d.

Young Adult Residences According to the Bureau of the Census, the following statistics describe the number (in thousands) of young adults living at home or in a dormitory in the year $2004.$

$$\begin{array}{lcc} & \textbf{Ages} 18-24 & \textbf{Ages} 25-34 \\ \hline \textbf{Male} & 7922 & 2534 \\ \textbf{Female} & 5779 & 995 \\ \end{array}$$

Choose one student at random. Find the probability that the student is
A female student aged $25$-$34$ years

Endangered Species The chart below shows the numbers of endangered and threatened species both here in the United States and abroad.

$$\begin{array}{lcc|cc} & \textbf{Endangered} & & \textbf{Threatened} \\ \hline & \textbf{United States} & \textbf{Foreign} & \textbf{United States} & \textbf{Foreign} \\ \hline \textbf{Mammals} & 68 & 251 & 10 & 20 \\ \textbf{Birds} & 77 & 175 & 13 & 6 \\ \textbf{Reptiles} & 14 & 64 & 22 & 16 \\ \textbf{Amphibians} & 11 & 8 & 10 & 1 \\ \end{array}$$

Choose one species at random. Find the probability that it is
An endangered foreign bird

Endangered Species The chart below shows the numbers of endangered and threatened species both here in the United States and abroad.

$$\begin{array}{lcc|cc} & \textbf{Endangered} & & \textbf{Threatened} \\ \hline & \textbf{United States} & \textbf{Foreign} & \textbf{United States} & \textbf{Foreign} \\ \hline \textbf{Mammals} & 68 & 251 & 10 & 20 \\ \textbf{Birds} & 77 & 175 & 13 & 6 \\ \textbf{Reptiles} & 14 & 64 & 22 & 16 \\ \textbf{Amphibians} & 11 & 8 & 10 & 1 \\ \end{array}$$

Choose one species at random. Find the probability that it is
A mammal or a threatened foreign species

The chart below displays the numbers of endangered and threatened species both here in the United States and abroad.

Choose one species at random. Determine the probability that it is

a. Threatened and in the United States

b. An endangered foreign bird

c. A mammal or a threatened foreign species

The Red Lobster restaurant chain regularly surveys its customers. On the basis of these surveys, the management of the chain claims that 75%of its customers rate the food as excellent. A consumer testing service wants to examine the claim by asking 460 customers to rate the food. What is the probability that less than 70% rate the food as excellent?