A study suggests that airlines have increased restrictions on cheap fares by raising overnight requirements (The Wall Street Journal, August 19, 2008). This would force business travelers to pay more for their flights, since they tend to need the most flexibility and want to be home on weekends. Eight months ago, the overnight stay requirements were as follows:

$$\begin{array}{|c|c|c|c|} \hline \text { One night } & \text { Two nights } & \text { Three nights } & \text { Saturday night } \\ \hline 37 \% & 17 \% & 28 \% & 18 \% \\ \hline \end{array}$$

A recent sample of $644$ flights found the following restrictions:

$$\begin{array}{|c|c|c|c|} \hline \text { One night } & \text { Two nights } & \text { Three nights } & \text { Saturday night } \\ \hline 117 \% & 137 \% & 298 \% & 92 \% \\ \hline \end{array}$$

At the 5% significance level, what is the conclusion to the hypothesis test? Interpret your results.

Discuss the Sand Creek Massacre. What might make it difficult for historians to determine the details surrounding this event?

Identify a possible opportunity cost for each of the following choices: (a) studying for a test on a Saturday afternoon, (b) using all the money you received for your birthday to pay for downloading songs, (c) spending four hours playing a video game on a Tuesday night, (d) having four slices of pizza for lunch.

In each of the following sentences, insert commas where necessary.

Example 1. Mr. Wilson${\color{#c34632}\text{,}}$ would you initial my schedule change${\color{#c34632}\text{,}}$ please?

No I appreciate the invitation but I’ve already made plans for Saturday night.

On Saturday Keisha ran 3.218 kilometers. On Sunday she ran 2.41 kilometers. How much farther did she run on Saturday than on Sunday?

A local newspaper randomly selects $20$ patrons of the Springwood Restaurant on a given Saturday night and has each patron rate the quality of his or her meal as $5$ (excellent), $4$ (good), $3$ (average), $2$ (poor), or $1$ (unsatisfactory). When the results are summarized, it is found that there are $16$ ratings of $5,3$ ratings of $4$, and $1$ rating of $3$. Let $M_d$ denote the population median rating that would be given by all possible patrons of the restaurant on the Saturday night.

Test $H_0: M_d=4.5$ versus $H_a: M_d>4.5$ by setting $\alpha=.05$

Do you think colonial outrage over the Boston Massacre was justified? Explain.

You've just received an invitation from a friend to do something on Saturday night. Write a short reply in which you decline the invitation, give an explanation, and tell your friend what you plan to do instead . Use the modelo to help you get started.

MODELO

Querido Julio. Gracias por la invitación, pero...

Sergio and Patricia went out on a Saturday night. Look at the picture and fill in the blank with the correct vowel that represents the stem change. Follow the model.

Modelo Sergio y Patricia se divirtieron mucho.

Una tarde, Sergio y Patricia salieron a comer. Ellos s______guieron por la calle Miraflores.

To work off a large pepperoni pizza you ate on Friday night, on Saturday morning you climb a 120-m-high hill. The human body is typically 20 percent efficient. How much energy was converted into thermal energy?

Use the following information.

You are planning the menu for your restaurant. For Saturday night you plan to serve roast beef and teriyaki chicken. You expect to serve at least 240 pounds of meat that evening and that less beef will be ordered than chicken. The roast beef costs 5 dollars per pound and the chicken costs 3 dollars per pound. You have a budget of at most 1200 dollars for meat for Saturday night.

What quadrant should the graph in Exercise 32 be restricted to for the solutions of the system to make sense in the real-world situation described? Explain.

*For each term or name below, write a sentence explaining its significance. * 5. Tiananmen Square massacre

Attendance at a museum more than tripled from Monday to Saturday. On Monday, $186$ people went to the museum. How many people went to the museum on Saturday?

Jenny baby-sat for $5 \frac{1}{2}$ hours on Friday night and 8 hours on Saturday. She charges $4.25 per hour. Use the Distributive Property to write two equivalent expressions that represent how much money Jenny earned.