Explore BrainMass

Descriptive Statistics

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

Value of Interquartile Range

A monthly report to the Texas Department of Health, division of Water Hygiene, contained the following water production data in thousands of gallons: 5263 5636 5264 4395 6090 5293 4668 5725 5171 4378 5118 5538 4838 5167 5119 5438 6843 5262 4653 5303 5913 4570 5142 5964 6431 4719 5358 6043 4554 5805 What is the value

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

Normal Distribution with mean value and standard deviation value

The scores of males on the 2008 Mathematical Scholastic Aptitude Test (MSAT) were approximately normally distributed with mean µ = 500 and standard deviation σ = 100 points (approximately). Find the proportion of males who received the following scores. a. Between 500 and 600 b. Between 400 and 600

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

Trade Credit Rates and Annual Rates of Interest

Company X sells on a 1/20, net 60, basis. Customer Y buys goods with an invoice of $1,000. a. How much can company Y deduct from the bill if it pays on day 20? b. How many extra days of credit can company Y receive if it passes up the cash discount? c. What is the effective annual rate of interest if Y pays on the due d

Changes: Sources and Uses of Cash

State how each of the following events would affect the firm's balance sheet. State whether each change is a source or use of cash. a. An automobile manufacturer increases production in response to a forecast increase in demand. Unfortunately, the demand does not increase. b. Competition forces the firm to give customers

Control Limits for Computer Chips

The smallest defect in a computer chip will render the entire chip worthless. Therefore, tight quality control measures must be established to monitor the chips. In the past, the percentage defective for these chips has been 1.1%. The sample size is 1,000. Determine the upper and lower control chart limits for these computer

Responses to Statistic Surveys

1. To what extent do the respondents agree with the statement "I attach great importance to credit cards? (1m)" (Give the percentage value of respondents that "strongly agree" and "agree" with the statement). 2. What is the main reason that most respondents didn't respond to any offer? Please show the frequency table and hist

Promoting the Keem Dishwashing Soap

The advertising agency promoting the new Keem dishwashing soap wants to get the best exposure possible for the product within the $100,000 advertising budget ceiling placed upon it. To do so, the agency needs to decide how much of the buget to spend on each of its two most effective media;(1) television spots during the afternoo

Solving a Production Mix using Excel

The Anderson Tub Company manufactures two line of bathtubs, called the model A and B. Every tub requires a certain amount of steel and zinc, the company has available a total of 25,000 pounds of steel and 6,000 pounds of zinc. Each model A bathtub requires a total of 125 pounds of steel and 209 pounds of zinc, and each yields

Identify as: ordinal, ratio, nominal, or interval data

Determine if whether the data represented should be classified as ordinal, ratio, nominal, or interval: (1) Numbers on NASCAR cars (2) Class ranking (3) Physical height (4) Social security numbers (5) Fahrenheit temperature (6) Age in months (7) Dress sizes (8) Sea l

Descriptive Statistics and Probability Distributions

Creek Ratz is a very popular restaurant located along the coast of northern Florida. They serve a variety of steak and seafood dinners. During the summer beach season, they do not take reservations or accept "call ahead" seating. Management of the restaurant is concerned with the time a patron must wait before being seated for d

Mean, Median and Standard Deviation and Interpreting Data

Refer to the CIA data, which reports demographic and economic information on 46 countries. a. Select the variable Life Expectancy 1. Find the mean, median and the standard deviation 2. Writer a brief summary of the distribution of life expectancy. Life Expectancy Luxenbourgh - 77.3 Mexico 71.76 Netherlands 78.43 New Z

Seasonal Indexes: Multiplicative Model

The monthly sales volume (in thousands of dollars) for a manufacturer of snow skis is seasonal (there tend to be more skis sold during fall and winter months than during warmer months). The following table shows the monthly seasonal indexes for the company's sales: JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 1.17 1.0

Histograms, Mean, Median and Mode

1) Over the past several months, customers at Stymie's department store have been asked to fill out customer satisfaction surveys. In the surveys, the customers rate their shopping experience on a scale of 0 to 100. Here are 25 recent ratings: 13, 16, 16, 21, 24, 33, 34, 37, 41, 45, 45, 49, 51, 56, 56, 56, 58, 61, 66, 70, 76,

Descriptive Statistics Data Analysis

2. Descriptive Statistics Paper Adding to your Week 3 paper, prepare and submit a 1,050-1,750-word paper examining the data you have collected, and drawing conclusions based on your findings. In your paper, be sure to include the following: a. Data analysis using descriptive statistics 1) Calculate the measures of central

Descriptive Statistics of Central Tendency

2. Descriptive Statistics Paper Adding to your Week 3 paper, prepare and submit a 1,050-1,750-word paper examining the data you have collected, and drawing conclusions based on your findings. In your paper, be sure to include the following: a. Data analysis using descriptive statistics 1) Calculate the measures of central ten

Important information about Statistics in Psychology

1. A sample of 10 high school students completed a course designed to increase SAT verbal scores. The following is the summary for this group's SAT verbal scores after completion of the course: Σx= 5846, Σx2 =3428148. a. What is the mean and standard deviation for this groups' SAT verbal score? b. What scores mark the

Average Cost

In a slow year, Deutsche Burgers will produce 2 million hamburgers at a total cost of $3.5 million. In a good year, it can produce 4 million hamburgers at a total cost of 4.5 million. a. What is the average cost per burger when the firm produces 1 million hamburgers? b. What is average cost when the firm produces 2 mill

Economic Order Quantity

Southeastern Bell stocks a certain switch box at its central warehouse for supplying field service offices. The yearly demand for these connectors is 15,000 units. Southeastern estimates its annual holding costs for this item to be $25 per unit. The cost to place and process an order from the supplier is $75. The company operate