The following table gives the percent of the market controlled by the most popular Internet browsers in 2016. Sketch or otherwise create an appropriate graph of the distribution and comment on its important features.

Browser	Percentage of Market
Chrome	58%
Firefox	14%
Explorer	10%
Safari	10%
Others	8%

The data show monthly rents for studio and one-bedroom apartments in San Francisco. Write a statistical question appropriate for these data and a brief comparison of the distribution of rents for these two types of housing units. Include appropriate graphics. (Source: Zillow)

Studio Apartments

One Bed-room Apartments

Applicants to California community colleges are asked to indicate one of these education goals at the time of application: transfer to a four-year institution, an AA degree, a CTE certificate, job retraining, or personal enrichment. In a group of 500 applications, describe a bar graph of these data that would have the least amount of variability. Also describe a bar graph that would have the most variability.

Software analysis of the salaries of a random sample of 288 Nevada teachers produced the confidence interval shown below. Which conclusion is correct? What’s wrong with the others?

$$\text { t-Inter val for } \mu : \left. \begin{array} { c c } { \text {with } 90.00 \% \text { Confidence, } } \\ { } { 38944 < \mu [ \text { TchPay]} < 42893 } \end{array} \right.$$

a) If we took many random samples of 288 Nevada teachers, about 9 out of 10 of them would produce this confidence interval. b) If we took many random samples of Nevada teachers, about 9 out of 10 of them would produce a confidence interval that contained the mean salary of all Nevada teachers. c) About 9 out of 10 Nevada teachers earn between $38,944 and$42,893. d) About 9 out of 10 of the teachers surveyed earn between $38,944 and$42,893. e) We are 90% confident that the average teacher salary in the United States is between $38,944 and$42,893.

Suppose a group of school-aged children is asked, “Which of these three ice cream flavors do you like the most: vanilla, chocolate, or strawberry?” Describe a bar graph of their responses that would have the least amount of variability. Also describe a bar graph that would have the most variability.

Data are shown for the cost of one year of law school at 30 of the top law schools in the United States in 2013. The numbers are in thousands of dollars. Make a histogram of the costs, pose a statistical question, and describe the distribution. If there are any outliers, identify the school(s).

A bank compares two proposals to increase the amount that its credit card customers charge on their cards. (The bank earns a percentage of the amount charged, paid by the stores that accept the card.) Proposal A offers to eliminate the annual fee for customers who charge $2400 or more during the year. Proposal B offers a small percent of the total amount charged as a cash rebate at the end of the year. The bank offers each proposal to an SRS of 150 of its credit card customers. At the end of the year, the total amount charged by each customer is recorded. Here are the summary statistics:

Is the bank's study an experiment? Why? How does this affect the conclusions the bank can draw from the study?

The accompanying table shows the gestation period (in days) for some animals. The gestation period is the length of pregnancy. Graph the gestation period and describe the distribution. If there are any outliers, identify the animal(s) and give the gestation periods. If you were to include humans in this graph, where would the data point be? The human gestation period is about $266$ days.

The following table shows the average life span for some mammals in years, according to infoplease. com. Graph these average life spans and describe the distribution. What is a typical life span? Identify the three outliers and report their life spans. If you were to include humans in this graph, where would the data point be? Humans live an average of about $75$ years.

The dart board shown is divided into twenty equal sectors. If the diameter of the board is 18 inches, what area of the board does each sector cover?

The following table shows a random sample of 50 quantitative SAT scores of first-year students admitted at a university. Make an appropriate graph of the distribution of the data, pose a statistical question, and describe the distribution.

a. A hospital employs 346 nurses, and 35% of them are male. How many male nurses are there?

b. An engineering firm employs 178 engineers, and 112 of them are male. What percentage of these engineers are female?

c. A large law firm is made up of 65% male lawyers, or 169 male lawyers. What is the total number of lawyers at the firm?

Triangle A B C has vertices A(1,3), B(-2,-1) and C(3,-2). Graph $\triangle$ A B C and its image after the indicated glide reflection.

Translation: along $\langle$ -1,1$\rangle$ Reflection: in y=x

The table shows prices of 50 college textbooks in a community college bookstore, rounded to the nearest dollar. Make an appropriate graph of the distribution of the data, pose a statistical question and describe the distribution.