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Descriptive Statistics

Mean, Median and Coefficient of Skewness

Listed on the MEGASTAT attachment is the average daily circulation for the 50 U. S. newspapers with the largest circulation. Please show all work/outputs. a. Find the mean, median, Q1, and Q3. b. Find the 15th and the 90th percentiles. c. Find the coefficient of skewness and interpret the result. d. Develop a box plot a

Specificity and Predictive Value

Please see the attachment. 12. Table 1. Results of a screening test for diabetes, using a cutoff point of 160 mg.dl. True Diagnosis Test result Diabetic Not Diabetic Total Positive 34 20 54 Negative 116 9,830 9,946 Total 150 9,850 10,000 The specificity of the screening test for diabetes is a. 0.3% b.

Describes at least 3 different statistical usages in daily life

Considering all of the day to day activities you are engaged in at work and in your personal lives, write a 200 (or more) word paper that describes at least three (3) different statistical usages that you see regularly. For each, describe how the statistics enhance the understanding of an issue or problem for the reader. Finally

Level of measurement, sample and population

2. What is the level of measurement for these items related to the newspaper business? (page 14) a. The number of papers sold each Sunday during 2004. b. The departments, such as editorial, advertising, sports, etc. c. A summary of the number of papers sold by county. d. The number of years with the paper for each employee

Cal and Becky have known each other since high school

Cal and Becky have known each other since high school. Two years ago, they entered the same university, and today they are taking undergraduate courses in the business school. Both hope to graduate with degrees in finance. In an attempt to make extra money and to use some of the knowledge gained from their business courses, C

Basic Descriptive Statistics .

2. A math test was given with the following results: 80, 69, 92, 75, 88, 37, 98, 92, 90, 81, 32, 50, 59, 66, 67, 66 Find the range, standard deviation, and variance for the scores. 3. For a particular sample of 50 scores on a psychology exam, the following results were obtained. Mean = 78 Midrange = 72 Third quartile = 94

Barbara Flynn is in charge of maintaining hospital supplies at General Hospital.

Please provide an answer to the problem below and make sure to show all the work as to how the answer was derived. ------------------------------------------------------------------------ Barbara Flynn is in charge of maintaining hospital supplies at General Hospital. During the past year, the mean lead time demand for b

Calculation of descriptive statistics

Always get overwhelmed by the amount of material when covered at a comprehensive level. Attached is the study material of what to be prepared to cover at the conclusion of this course. I have worked through them but get stumped at several points. Can you provide a systematic approach to these problems and provide a reference to

Finding Evidence to Reject Agencies Claims

1. A regulatory agency claims the mean weekly telemarketing calls a citizen receives is 18 or less. A consumer advocacy group surveyed 81 citizens and found that the mean number of calls they received weekly was 19. At a level of significance of alpha = 0.05 is there sufficient evidence to reject the agencies claim? Assume

Which person is relatively taller in their group

Please provide a step by step resolution to this problem. Which person is relatively taller in their group, a man 75 inches tall (xbar = 70 and s = 4.0) or a woman 70 inches tall (xbar = 65 and s = 3.5)? (Note: xbar represents the mean value of the sample of heights collected.)

How many activities are included in the monthly budget for month four?

See the attachment for a resource in answering the following questions 5. Referring to the attachment, How many activities are included in the monthly budget for month four? (note: the ES, LS, and t are presented in months) A. 1 B. 2 C. 3 D. impossible to tell 6. What is the monthly budget for mon

Constraint for a resource that is binding in optimum

Suppose we have a constraint for a resource that is binding in optimum. Find a scenario under which the optimal profit will remain unchanged even if we have more of that resource. Draw a graph that represents scenario!

Transportation and Assignment Models

Don Levine Corporation is considering adding an additional plant to its three existing facilities in Decatur, Minneapolis, and Carbondale. Both St. Louis and East St.Louis are being considered. From Existing Plants O Decatus Minneapolis Carbondale Demand Blue Earh

Transportation and Assignment Models

The management of the Executive Furniture Corporation decided to expand the production capacity at its Des Moines factory and to cut back production at its factories. It also recognizes a shifting market for its desks and revises the requirements at its three warehouses. Data for Problem: New Warehouse Requirements

Transportation and Assignment Models

The management of the Executive Furniture Corporation decided to expand the production capacity at its Des Moines factory and to cut back production at its factories. It also recognizes a shifting market for its desks and revises the requirements at its three warehouses. Data for Problem: New Warehouse Requirements

Control Limits and Standard Deviation

A quality control inspector at the Beautiful Shampoo Company has taken three samples with four observations each of the volume of shampoo bottles filled. The data collected by the inspector and the computed means are shown here: Samples of Shampoo Bottles/Volume in Ounces Observation 1 2

Quitmeyer Electronics Incorporated manufactures the following six microcomputer peripheral devices: internal modems, external modems, graphics circuit boards, CD drives, hard disk drivers, and memory expansion boards.

Quitmeyer Electronics Incorporated manufactures the following six microcomputer peripheral devices: internal modems, external modems, graphics circuit boards, CD drives, hard disk drivers, and memory expansion boards. Each of these technical products requires time, in minutes, on three types of electronic testing equipment, as s

Waiting Line Models and Simulation

Please help with the given problem: It seems that simulation could handle any situation or study. But is that always true? Discuss instances in which a simulation would be important and useful, and then a situation in which a simulation would not be appropriate. Finally, include a set of rules you would use to determine if

Percentage of complete full service oil changes

The length of time to do a complete full service oil change at Speedy-Lube is normally distributed with a mean of 15.8 minutes and a standard deviation of 2.2 minutes. What percentage of complete full service oil changes will take less than 10 minutes? If 1000 cars had a complete full service oil change, how many would you e

Difference in densities

Do you know if there is any differences in the densities of a product at certain temperatures. Here is the data that I received. Tell me if there is any difference. TEMPERATURES g/ml 17 degrees C 1.86 18 degrees C 1.88 19 degrees C 1.91 20 degrees C 1.85