(a) Plot the total minutes of TV viewing time per household. (b) Describe the trend (if any) and discuss possible causes. (c) Fit a linear trend to the data. (d) Would this model give reasonable forecasts? Would another trend model be better? Explain. (e) Make a forecast for 2015. Show the forecast calculations. (f) Would these data ever approach an asymptote? Explain. Note: Time is in 5-year increments, so use t =14 for the 2015 forecast.

(a) Plot both Swiss watch time series on the same graph.

(b) Describe the trend (if any) and discuss possible causes.

(c) Fit an exponential trend to each time series.

(d) Interpret each fitted trend carefully. What conclusion do you draw?

(e) Make forecasts for the next 3 years, using the linear trend model. Why might 2009 have been unusual? Explain.

When is a cen- tered moving average harder to calculate?

Name two types of moving averages.

When do we use a moving average?

(a) Make a line chart for JetBlue’s revenue.

(b) Describe the trend (if any) and discuss possible causes.

(c) Fit both a linear and an exponential trend to the data.

(d) Which model is preferred? Why?

(e) Make annual forecasts for 2011–2013, using a trend model of your choice (or a judgment forecast).

In 2009, US Airways Flight 1549 made a successful emergency landing in the Hudson River, after striking birds shortly after takeoff. Are bird strikes an increasing threat to planes?

(a) Make an Excel graph of the data on bird strikes.

(b) Discuss the underlying causes that might explain the trend.

(c) Use Excel, MegaStat, or MINITAB to fit three trends (linear, quadratic, and exponential) to the time series.

(d) Which trend model do you think is best to make forecasts for the next 3 years? Why?

(e) Use each of the three fitted trend equations to make numerical forecasts for 2008, 2009, and 2010. How much difference does the choice of model make? Which forecasts do you trust the most, and why?

(f) If you have access to the web, check your forecasts. How accurate were they?

On the line before the following sentence, write D if the underlined words should be set off by dashes. Write P if they should be set off by parentheses. Write B if they should be set off by brackets. Example $\underline{\text{\color{#c34632}P}}$ 1. The Mississippi $\underline{\text{see map on page 26}}$ is the longest river in the country.

______ Diana Ross $\underline{\text{remember her from the Supremes}}$? starred in a film version of Billie Holiday’s life.

When a random sample of 935 parents were asked about rules in their homes, 77% said they had rules about the kinds of TV shows their children could watch. Among the 790 of those parents whose teenage children had Internet access, 85% had rules about the kinds of Internet sites their teens could visit. That looks like a difference, but can we tell? Explain why a two sample z-test would not be appropriate here.

(II) Determine the time it takes for a satellite to orbit the Earth in a circular near-Earth orbit. A "near-Earth" orbit is at height above the surface of the Earth that is very small compared to the radius of the earth. [Hint: You may take the acceleration due to gravity as essentially the same as that on the surface.] Does your result depend on the mass of the satellite?

The top six basic cable television providers in the year 2012 are listed in the following table. Use this information for the following exercise.

List the elements of the following sets.

H, the set of cable providers with less than 20 million subscribers.

$\text{\red{Infer}}$ Cartilage does not appear on X-ray film. Instead, it is seen as a clear area between the shaft and the ends of bones. Examine the X-rays shown below. Which hand belongs to the youngest person? Explain.

Investigate how a thin film of water on a glass surface affects the critical angle for total reflection. Use $n=1.50$ for glass and $n=1.33$ for water. Find the critical angle for total internal reflection at the glass-water interface.

Describe how to graph a system of linear inequalities.