Discuss the basic strategy for comparing the means of two populations based on a simple random paired sample.

True or False: If there are just two data points, the least squares line will be the line that passes through them. (Assume that the x-coordinates of the points are different.)

A recent poll of 738 randomly selected customers of a major U.S. cell-phone carrier found that 170 of them had walked into something or someone while talking on a cell phone. Show that the conditions for calculating a confidence interval for a proportion are satisfied.

USA Today reported that 44.9% of those surveyed (1261 adults) ate in fast-food restaurants from one to three times each week. What is the implied population?

A compound that dissociates in water to form ions is called a(n) _____.

For each of the following situations, explain why the combinations rule or the permutations rule should be used. Determine the number of different arrangements of 5 items that can be selected from 12 distinct items.

What is meant by the visual pathway? Where is the blind spot and what causes it?

Find each integral by a substitution or by integration by parts, as appropriate. $\int x^{3} \ln 2 x d x$

Regarding the variables in a regression analysis, a. what is the independent variable called? b. what is the dependent variable called?

Consider these sample data: $x_{1}=1$, $x_{2}=7$, $x_{3}=4$, $x_{4}=5$, $x_{5}=10$. a. Find n. b. Compute $\Sigma x_{i}$. c. Determine $\bar{x}$.

Evaluate each definite integral. $\int_{1}^{5} \frac{d x}{x}$

Simplify. $\frac{\left(4 x^{3} y\right)^{2}}{8 x^{2} y^{3}}$

In a carnival game, there are six identical boxes, one of which contains a prize. A contestant wins the prize by selecting the box containing it. Before each game, the old prize is removed and another prize is placed at random in one of the six boxes. Is it appropriate to use the binomial probability distribution to find the probability that a contestant who plays the game five times wins exactly twice? Check each of the requirements of a binomial experiment and give the values of n, r, and p.

The brands of the last 45 digital single-lens reflex (SLR) cameras sold on a popular Internet auction site are listed here. Summarize the distribution of camera brands with a frequency table and a relative frequency table.

$$\begin{array}{l} \text{Canon} & \text{Sony} & \text{Canon} & \text{Nikon} & \text{Fujifilm}\\ \text{Nikon} & \text{Canon} & \text{Sony} & \text{Canon} & \text{Canon}\\ \text{Nikon} & \text{Canon} & \text{Nikon} & \text{Canon} & \text{Canon}\\ \text{Canon} & \text{Nikon} & \text{Fujifilm} & \text{Canon} & \text{Nikon}\\ \text{Nikon} & \text{Canon} & \text{Canon} & \text{Canon} & \text{Canon}\\ \text{Olympus} & \text{Canon} & \text{Canon} & \text{Canon} & \text{Nikon}\\ \text{Olympus} & \text{Sony} & \text{Canon} & \text{Canon} & \text{Sony}\\ \text{Canon} & \text{Nikon} & \text{Sony} & \text{Canon} & \text{Fujifilm}\\ \text{Nikon} & \text{Canon} & \text{Nikon} & \text{Canon} & \text{Sony}\\ \end{array}$$