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Demand and supply conditions in the perfectly competitive

Question #4. Lawn mowing services are supplied by a host of individuals in the suburb of Westbrook. Demand and supply conditions in the perfectly competitive domestic for lawn mowing services are: P = $75 - 1.75QD (Demand) P = $2QS (Supply) where P is price per lawn mowed and Q is quantity of lawns mowed per day. a.)


14.16 (a) Plot the data on U.S. general aviation shipments. (b) Describe the pattern and discuss possible causes. (c) Would a fitted trend be helpful? Explain. (d) Make a similar graph for 1992-2003 only. Would a fitted trend be helpful in making a prediction for 2004? (e) Fit a trend model of your choice to the 1992-2003 data.

Statistics, Selling Price & Real Estate Property Questions

Please see the attachment. This is for study purposes only. ------ 5. The dependent variable shown in the plot is the selling price of the real estate property. 6. The plot shows a total of 10 pairs of observations that incorporate the two variables, living area and selling price. 7. The relationship between the two

Use of Graphic Displays for Data Research

Why do we use graphical displays of the data from our research, such as Pareto Charts, Bar Charts, Pie Charts, Flow Charts, or Process Control Charts? How has the graphical display of data changed in the last 10 years? How will it change in the next 10 years?

Measurements with Graph or Chart

Standard Test Scores Name Gender Absences PE Math Writing Reading Alex Boy 5 49 85 86 80 Anthony Boy 18 51 39 71 75 Douglas Boy 1 82 74 78 79 Jorge Boy 4 56 66 68 60 Joshua Boy 5 83 79 78 77 Luke Boy 0 94 89 84 84 Robert Boy 17 36 36 56 50 Rupert Boy 4 24 55 56 52 Seth Boy 0 61 92 89 83 Wayne Boy 1 65 92 96 91 Blair

Statistical Chart: How to Summarize Data in the Chart

What I need to do is summarize the results in a chart stating x # of participants were insecure at the start and x changed by the end of the study. The following is the information that would need to be enter. 90 Participants all had insecure attachment behavior. Group A was given no intervention, Group B was given one interv

Regression Formula and Interest Rates: Housing Example

Please see attachment. If interest rates fall another one percentage point to 3 percent in August. There is also broad agreement that interest rates will remain low for a long time to come. By the end of the summer, mortgage rates could have crept down to just over 4 percent, the lowest level in modern times. Mortgage rates a

Finding Proportions from Histograms

1) Weight Away, a company that sells weight-loss plans, often advertises the effectiveness of its plans by highlighting the stories of a few clients who have lost extraordinary amounts of weight. To get a better indication of the general effectiveness of the plans, we asked Weight Away to send us information about "typical" clie

Constructing bar charts and pie charts

During 2001, the Campbell Foundation provided the following amounts in grants: Camden, N.J., $1,336,700; plant communities, $341,500; Dollars for Doers, $179, 600; other projects, $64,100. a. Construct a pie chart to summarize these contributions. b. Construct a bar chart to summarize these contributions c. Why is it ap

Create a bar chart in Excel

The following US market shares for automobile and light-truck sales for 2001 and 2002 have been reported. Country Manufacture 2001 2002 North America 82.2% 80.7% Japan 9.6 10.5 Europe 4.6 5.0 Korea 3.6

How would you construct a x chart based on these 10 samples? How would you construct an R chart based on these samples. Are there any points that have gone out of control? What conclusion can make with these results about the quality control in the production What non-statistical quality method(s) can I use to ensure quality in products?

If a food processing company specified that the weight of each box containing 20 × 750 gram jars of jam should be 15 kg with a tolerance of 100 grams per box. A statistical quality control operation was set up and the following data was obtained: Sample Number Weight in kg 1 15.02 15.02 15.08 15.06 2 15.10 15.24 15.0

Basic statistics and Graphs ..

2. The Degree of Reading Power (DRP) test is often used to measure the reading ability of children. Here are the DRP scores of 44 third-grade students, measured during research on ways to improve reading performance: 40, 26, 39, 14, 42, 18, 25, 43, 46, 27, 19, 47, 19, 26, 35, 34, 15, 44, 40, 38, 31, 46, 52, 25, 35, 35, 33, 29,

Hypothesis testing for business research

Can anyone help with this one? I'm kind of lost. You have asked to research the high absenteeism rate in your company. One required analysis is to be by gender. Assume you have been asked to do the study via a survey. § What secondary research might you do before doing the survey? § Other than gender what other

Correlation and regression - A sociologist in interested in the relation between x = number of job changes and y = annual salary( in thousands of dollars) for people living in ...

A sociologist in interested in the relation between x = number of job changes and y = annual salary( in thousands of dollars) for people living in the Nashville area. A random sample of 10 people employed in Nashville provided the following information: ( You may have to re-write the graph below because I cannot get it to line u

How to make histograms with M&M count data

Take the M&M data and the M&M data from all of your classmates (already attached info on this post) and make two histograms. Make two histograms from (1) the total count in each bag for yourself, and (2) from the average or mean from all the class members (my info is Kris). To make the histogram you can either make one by

Stats Q and A ... making graphs to display data

Please see attached. Utilize graphical representation to present data, show all your work: 2.19 Construct a histrogram, a frequency polygon, and an ogive for the following frequency distribution. Class Interval Frequency 50-under 60 13 60-under 70 27 70-under 80 43 80-under 90 31 90-under 100

Out of 110 diesel engines tested, a rework and repair facility found

Step by step, show how to draw Pareto chart in excel. Out of 110 diesel engines tested, a rework and repair facility found 9 had leaky water pumps, 15 had faulty cylinders, 4 had ignition problems, 52 had oil leaks, and 30 had cracked blocks. Draw a Pareto chart to identify the key problem in the engines.

Determining Graphs for Data

Please help, we are using average and I need to change my graph from percentages, however, it just goes into chaos when I try to adjust it to the numbers the graph I need. Thank you. 1.00- 1.5 = (1) = Significantly above 1.6 - 2.5 = (2) = Consistently better 2.6 - 3.5 = (3) = Consistently Achieve 3.6 - 4.5 = (4) = Not

Question about bar graph

The bar graph below compares the mean time in seconds for 7-yr old girls to complete a certain task to the mean time in seconds for 7-yr old boys to complete the same task. There is a statistical deception here. Explain what is deceptive about the bar graph.

Class Survey Accumulated Data

Dear OTA, Please explain with necessary steps. Thanks Categorical Data Sets: 1. Create a summary table for each data et. Expand them to include relative frequencies and percent frequencies. 2. Construct a pie chart for one of the sets (column C or D would be great). 3. Construct a bar chart for the other that wasn't

Exam Score Frequency Question

1. The exam scores of 19 students are as follow: 76, 74, 82, 96, 66, 76, 78,72, 52, 68, 86, 84, 62, 76, 78, 92, 82, 74, 88 a. Prepare a frequency distribution. b. Draw a stem-and-leaf plot. c. Construct a histogram with a class width of 1 and 5. d. Based on (a.) do you think a grouped freque

Statistics Questions

3. What is an example of a research problem at your organization that would benefit from the use of either descriptive statistics or probability distribution? Please provide a short background and how you would apply the concept. 5. Describe a possible application of Control Chart in your personal life. Please be specif

Inflation Problems

Everyone complains about the high price of gasoline. You may have heard some adults talk about the "good old days" when gasoline sold for about 30 cents a gallon. Those "good old days" were the 1960s and early 1970s. How "good" were they? In real terms, how high is the current price of gasoline? Use the following data from the N


An automatic filling machine is used to fill 1 liter bottles of cola. The machine's output is approximately normal with a mean of 1.0 liter and a standard deviation of .01 liter. Output is monitored using means of samples of 25 observations. A) Determine upper and lower control limits that will include roughly 97 percent o

Market analysis pie graph

See attached file for full problem description. Market Analysis Your Fireplace Shop focuses on selling primarily to homeowners. In fact, according to a survey done by the HPBA, homeowners are looking for cleaner, more efficient options for heating their homes. So, over 1fifty-one percent of homeowners believe that insta

X bar and R chart, Cp

The specification height for a small pin is 20 +/-.05 millimeters. The cutting process has a standard deviation of 0.018 millimeters. Calculate the Cp index for this process. From this index is the process in control. I am given certain data-- How do I need to set up an X-Bar and an R-chart with the data I'm given

Bar Graph and Histogram Instructions

I have been attempting to do a bar graph and a histogram graph on the computer for a couple of days from the information below. I have tried all the on-line examples of how to make a graph and no luck. I am not computer literate at all. could you provide maybe a simple web-site or step by step instructions how to complete these

Tabular and Graphical Presentations : Histograms, Bar Graphs and Pie Charts

In alphabetical order, the six most common last names in the United States are Brown, Davis, Johnson, Jones, Smith and Williams (Time Almanac 2001). Assume that a sample of 50 individuals with one of these last names provide the following data. Please look at excel file. Summarize the data by constructing the following: A