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Descriptive Statistics

Mean - Deviation

3-21 The following is a set of data for a population with N=10; 7 5 11 8 3 6 2 1 9 8 a. compute the population mean b. compute the population standard deviation 3-37 The following is a set of data from a sample of n=11 items X 7 5 8 3 6 10 12 4 9 15 18 Y 21 15 24 9 18 30 36 12 27 45 54 a. Compute t

What are statistics?

Please see the attached document to answer questions I am having a hard time understanding. From attachment: 1. What are major quantitative design types? Name at least three types and provide a published example of a study for each type. 2. What different types of variables are used in quantitative studies? Describe ea


A list of 52 employees is below. 1) please compute the mean, median, and standard deviation of the list of the 52 employees. 2) Use excel to choose a simple random sample of size 15 from this frame. 3) please compute the mean, medium, and standard deviation of the annual salaris for the 15 employees included in the si

Annual Cost of Busing Students to School

The Springdale School board has made the decision to close one its junior high schools (seventh and eight grades) at the end of the school year and reassign all of next year's students to one of the three remaining junior high schools. The school district for the closed school has been divided into five areas as shown in the ta

Transportation and Model Formulation

5. In the transportation problem on the next page, products are produced at plants in Locations A and B and shipped to warehouses in locations X, Y and Z. 5a. According to the model formulation, what is the capacity of Plant B? _________ 5b. According to the model formulation, what is the demand at warehouse Z? ________

Statistics Charts

As the production manager for an electronic circuit company you have encountered the following situation. Part 1 A process for producing electronic circuits has achieved very high yield levels. An average of only 10 defective parts per million is currently produced. What are the upper and lower control limits for a samp

Descriptive statistics and probability problems

Hello. I need help towards this one problem only. It tends to be confusing to me. Please can anybody help me? Determine whether a probability distribution is given. In those cases where a probability distribution is not described, identify the requirements that are not satisfied. In those cases where a probability distributio

Descriptive statistics

The monthly average low temperatures* during different months of year at Denver, CO are given below: January February March April May June 5 8 18 29 40 50 July August September October November December 55 53 44 32 24 12 Source: Word-process your solution and answers below. a) Find the mean year

Descriptive statistics

Below is some data from 2005 for on-the-job deaths in some dangerous jobs. Which job seems the most dangerous? Which seems the least dangerous? Explain. total deaths total employed Driver 993 3,412,370 Farmers 341

Statistics: Catagorical and Numerical Variables

1.22 The U.S. Census Bureau site,,contains survey information on people, business, geography, and other topics. Go to the site and click on Housing in the "People and Households" sections. Then click on American Housing Survey. a. Briefly describe the American Housing Survey. b. Give an example of a categor

Removing Outliers from Data

While exploring data that was collected for an investigation of resources needed for software testing and improvement, you have found an outlier. The study is focused on two variables: the number of bugs found in the code and the time (in person-hours) required to fix them. The outlier corresponds to a very large project with

Article Summary: Consumers and Their Memory of Smell

Consumers didn't need to be told that Jazz Diet Pepsi was about to hit store shelves; they could smell it. The soft-drink company had placed an ad laced with scents of black cherry and French vanilla in the October 2006 edition of People magazine. Four months later, British travel agency Thomson Holidays sprayed its store win

How many ads of each type should the candidate for mayor use

A candidate for mayor in a small town has allocated $40,000 for last minute advertising. He will be using two types of ads radio ads which cost $200 per ad and reach 3,000 people and television ads which cost $500 per ad and reach 7,000 people. In planning the campaign the manager would like to reach as many people as possible b

Descriptive Statistics and hypothesis testing

1. Suppose that a broad cross section of high school students took a very difficult scholarship exam and almost all scored very low but a very small number scored very high. When plotted as a curve, the distribution will show what type of skew? 2. Which type of distribution is often found in the nature? 3. What is the form

Descriptive Statistics and Probability calculations in Minitab.

Sect. 5-2, p. 209 Identifying Probability Distributions. In Exercise 7-12, determine whether a probability distribution is given. In those cases where a probability distribution is not described, identify the requirements that are not satisfied. In those cases where a probability distribution is described, find its mean and

Cost-benefit Analysis and Related Topics

Assignment #8: Cost-benefit Analysis and Related Topics 1. Suppose you are the primary decision-maker (with input from the board, of course) in the healthcare corporation known as Medical Care at Your Doorstep (MCYD). The clinics operated by MCYD are located in areas that underserved by hospitals and the mission of

Solving Descriptive Statistics and Probability Problems

See the attached file. Question 1: Gregor Mendel crossed two breeds of peas and examined the crop. He found 892 wrinkled green peas, 378 smooth green peas, 618 wrinkled yellow peas, and 241 smooth yellow peas. a. If he picked a smooth pea at random from his crop, what is the probability that it was yellow? b. If he p

Quantitative decision

Hi can you please help me with this study case please. I am not very sure about my answers. Thanks

Qualitative and quantitative variables

Refer to the Wage Data that is in the attachment, which reports information on annual wages for a sample of 100 workers. Also included are variables relating to industry, years of education, and gender for each worker. (a) Which of the 12 variables are qualitative and which are quantitative? (b) Determine the level of measu

Statistics - Descriptive Statistics (Analysis of Variance)

Car Fuel Consumption: The following table lists highway fuel consumption amounts (in mi/gal) from data Set 22 in Appendix C. Assume that fuel consumption amounts are not affected by an interaction between the type of transmission (manual or automatic) and the number of cylinders. Are fuel consumption amounts affected by the

Important Information About Exponential and Reciprocal Functions

Using a present value table, your calculator, or a computer program present value function, answer the following questions. Assistance is needed with the formula to calculate the problems: Required: a. What is the present value of nine annual cash payments of $4,000, to be paid at the end of each year using an interest rate

Estimating Single Population Parameters

A 2005 article written by Will Lester of the Associated Press reported on a poll in which 80% of those surveyed say that American who currently own a SUV (sport utility vehicle) shoudl switch to a more fuel-efficient vehicle to ease America's dependency on foreign oil. As a follow up to this report a consumer group conducted a

Type of measurement scales for each variable

Determine the types of measurement scales for each variable (Nominal, Ordinal, Interval, Ratio): 1) Name 2) Gender 3) Absences 4) Physical Education (PE) 5) Math 6) Writing 7) Reading

PERT Diagram for a Transmission Company

The Midwest Gas Transmission Company must build a pump station on one of its major pipelines. The activities involved in completing this project are given in the following table. Activity Description Precedence A Carry out project administration none B Hire pipeline construction personnel A C Purchase pump station equipment

Effect of change on mean and median

Please help with the following problems. Provide a detailed explanation for each question. a. The firm in question 4 gives no raises to the clerks and junior accountants, while the owner's take increases to $455,000. How does this change affect the mean? How does it affect the median? b. A discussion of extreme weather re

Qualitative and Quantitative variables

A. Which of the 12 variables listed below are qualitative and which are quantitative? b. Determine the level of measurement for each variable. Give reasons for your categorization. Explanation of the coding is: Column Description A Annual wage in dollars B Industry 1=manufacturing 2=construction 0=other C Occupa

Normal Distribution

How do you determine how the data is normaly distributed? How do you determine the standard deviation from the mean? What are the steps to determine the tons of coffee that a population will export? 1. Use the features of the Normal Distribution to answer the following questions about coffee: Below is a copy of an Ex