Wetlands offer a diversity of benefits. They provide a habitat for wildlife, spawning grounds for U.S. commercial fish, and renewable timber resources. In the last 200 years, the United States has lost more than half its wetlands. Environmental Almanac gives the percentage of wetlands lost in each state in the last 200 years. For the 30 of the lower 48 states, the percentage loss of wetlands per state is as follows. 59 45 68 27 38 51 9 89 27 42 50 30 60 35 83 38 20 59 35 87 42 51 90 50 50 37 48 73 45 35 Make a stem-and-leaf display of these data. (Use the tens digit as the stem and the ones digit as the leaf. Enter NONE in any unused answer blanks.) Percent of Wetlands Lost How are the percentages distributed? Is the distribution skewed? Are there any gaps? (Select all that apply.) O These data are fairly symmetric, perhaps slightly skewed right. O The percentages are concentrated from 60% to 90%. OThere is a gap showing that none of the lower 48 states has lost from 60% to 69% of its wetlands. OThere is a gap showing that none of the lower 48 states has lost from 10% to 19% of its wetlands. OThe percentages are concentrated from 20% to 60%. O There are no gaps in the data. These data are strongly skewed left.

show step by step and answer all questions The 102 highway has a posted speed limit of 70 miles per hour on the stretch from San Francisco to Bay Area. For a single week, the highway patrol set up a hidden radar gun to measure how many cars break the speed limit after having numerous reports of accidents on this stretch of highway. The highway patrol needs to put together an action plan if the annual proportion of vehicles who break the speed limit is over 9%. However, they could only set up the radar gun for one week. Question-The sampling method used for this situation would most likely be considered 'convenience sampling.' Find a potential fault, bais, or hidden variable in the way this sample was conducted that might skew the results. -What is the sample size,What is the proportion of vehicles who broke the speed limit over this 1 week period from Bay Area to San Francisco? -Construct a 90% confidence interval for the proportion of vehicles who break the speed limit annually. -Is…

A number of tools can be used in business process improvement. Of them a __________ is a type of chart that contains both bars and a line graph, where individual values are represented in descending order by bars, and the cumulative total is represented by the line.

Eye Color       Blue Brown Green/Hazel/Other Total MALE 6 20 6 32 FEMALE 4 16 12 32 TOTAL 10 36 18 64 1. What percent of females are brown-eyed?

Coffee is a leading export from several developing countries. When coffee prices are high, farmers often clear forest to plant more coffee trees. Here are five years’ data on prices paid to coffee growers in Columbia and the percent of forest area lost in a national park that lies in a coffee producing region: Price (cents per pound) 29 40 54 55 72 Forest lost (%) 0.49 1.59 1.69 1.82 3.10 Question: Make a scatterplot. Which one is the explanatory variable, and which one is the response variable? What kind of pattern does your plot shows?

Many countries, especially those in Europe, have significant gold holdings. But many of these countries also have massive debts. The following data show the total value of gold holdings in billions of U.S. dollars and the debt as a percentage of the gross domestic product for nine countries (WordPress and Trading Economics websites, February 24, 2012). Click on the datafile logo to reference the data. Country Gold Value Debt China 63 17.7 France 146 81.7 Germany 203 83.2 Indonesia 33 69.2 Italy 147 119 Netherlands 36 63.7 Russia 50 9.9 Switzerland 62 55 U.S. 487 93.2   Using the entire data set, develop the estimated regression equation that can be used to predict the debt of a country given the total value of its gold holdings. y^ =   (to 4 decimals)   (to 4 decimals) Gold Value Suppose that after looking at the scatter diagram in part (a) that you were able to visually identify what appears to be an…

In a month where the price of eggs is above average, would you expect the price of milk to be above average or below average? Explain.

A biologist gathered the following information about deer populations in a national park area.   Juvenile (age ≤ 2 years) Adult (age > 2 years) Total Male 23 171 194 Female 112 935 1044 Total 135 1103 1238 The biologist made the calculation shown below. Which question was she trying to answer? 23 ÷ 194   a. What percentage of the male deer are juveniles?   b. What percentage of the juvenile deer are males?   c. What percentage of the total deer are juvenile males?   d. What percentage of the total deer are males?

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Of all the species in the world, 4 out of every 5 are insects. What percentage of species are insects? |%