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Quantative Analysis of Data

Q 42 - Refer to the baeball 2000 data attachment...

Refer to the baseball 2000 data attachment. a. At the .10 significance level, is ther a difference in the variation of the number of stolen bases among the teams that play their home games on natural grass versus artificial turf? b. Create a variable that classifies a team's total attendance into three groups: less than 2.

Descriptive Statistics

How do I prepare 4 -7 power point slides using the descriptive statstics that I currently have? (See attached file for full problem description) --- Descriptive Statistics There are several measures of central tendencies that can be applied to the data that was collected for the Small Business Owners Day Care Meal Bu

Making Inferences Based on a Single Sample

I. Explain what the phrase 95% confident means when we interpret a 95% confidence interval for mu. a. In repeated sampling, 95% of similarly constructed intervals would contain the value of the population mean. b. 95% of similarly constructed intervals would contain the value of the sampled mean. c. 95% of the observations in

Inferences Based on Two Samples

A new weight-reducing technique, consisting of a liquid protein diet, is currently undergoing tests by the Food and Drug Administration (FDA) before its introduction into the market. A typical test performed by the FDA is the following: The weights of a random sample of five people are recorded before they are introduced to the

Solve the problem and show solution

Solve the problem and show solution You are given the following population data of the highest IQ's at Really Bright University. 145 168 163 162 185 164 156 194 168 152 168 146 157 173 156 174 136 134 140 171 207 172 153 169 154 Determine the following: 1. Median 2.

Probability, Mean, Standard Deviation

When a female who is a carrier of color-blindness and a male who does not carry color blindness parent a child, the probability is 0.25 that a child born will be a color-blind male. Assume one such couple will have 6 children. Let X = the number of color-blind males parented by this couple. a. Find the probability that this

Solving Continuous Probability Distributions

Refer to the attachment... a. Develop a 90 percent confidence interval for the mean percent of the population over 65 years. b. Develop a 90 percent confidence interval for the mean energy use.

Statistics Problem

An air traffic control error is said to occur when planes come too close to one another. The following data represent the number of air traffic control errors for a random sample of regions around the US for fiscal years 1996 and 2000. a. Compute the sample mean number of errors in 1996 and 2000 b. Compute the median numb

Statistics theory problems

Please find the questions in the attached document. 1. To get through a page in a statistics book can take three or four times longer than to get through a page in a nonnumerical book. True-False Basic math problems: 2. -12 + 8 = 3. 4 * (-5) = 4. -5 / -4 = 5. 3 * 7 - 6 = 6. 4^3 = 7. ((8 + 3) * 2) - 5 =

Weighted average and mean square error

Will a k-period weighted average produce a lower mean square error (MSE) when making predictions than a weighted average derived from k minus 1 periods? If so, why or why not?

Quantitative Problem

Questions (1) explain in detail what each of them do. ? Descriptive Measures ? Probability ? Sampling Distributions ? Linear Regression ? Time Series Forecasting ? Index Numbers ? Decision Making (2) explain the advantages and disadvantages each of them have if they are attempted to be used by a finance departme

Stats

Answer THREE questions in total. ONE question from SECTION A and TWO questions from SECTION B. The solutions have to be typed not scanned. Question A1 The total body calcium (expressed as a percentage of the mean normal value) was determined for a random sample of 60 rheumatoid arthritis patients receiving prednisolone treat

Standard deviation of Armstrong Faber

Armstrong Faber produces a standard number-two pencil called Ultra-Lite. Since Chuck Armstong started Armstrong Faber, sales have grown steadily. With the increase in the price of wood products, however, Chuch has been forced to increase the price of the Ultra-Lite pencils. As a result, the demand for Ultra-lite has been fairly

Census

71. Refer to the OECD data (Appendix L), which reports information on census, economic, and business data for 29 selected countries. a. Compute the mean, median, and mode for the variable employment. Which measure of central tendency seems to be most representative of the data? b. Compute the mean, median, and mode of the

Mean and Median etc.

70. Refer to the Baseball 2000 data (Appendix K), which reports information for the 30 Major League Baseball teams for the 2000 season. a. Determine the mean and the median team salary. Does one measure of central tendency seem better, or more representative, than the other? b. Determine the mean and the median attendance

Mean, Range, Standard Deviation, Variance and Skewness Problem Set

30. Determine the estimated mean of the following frequency distribution. Class Frequency 0 up to 5 2 5 up to 10 7 10 up to 15 12 15 up to 20 6 20 up to 25 3 93. Each person who applies for an assembly job at Carolina Furniture, Inc. is given a mechanical aptitude test. One part of the test involves assembling a dresser

Regression Analysis for Molding Company

I run a molding company and ran a regression analysis of monthly sales looking at monthly sales of prototype parts, travel expenses and advertising expenses. I want to see if any of these variables effect molding sales or help predict molding sales. N = 30. Any help with reading the results, main findings, what in the heck

Standard Deviation

#1) The sample standard deviation is a measure of: a.) center tendency b.) variability c.) relative position d.) all of the above #2) A random sample of 100 experimental unitsis one selected from the population in such a way that every different sample of size 100: a.) have different chances of selection or

Random Variables

Two different problems below: #1.) The following is the joint density for two random variables, X1 and X2: f(X1, X2): {3X1 for 0<=X2<=X1<=1 0 elsewhere Find P(0.2<=X2<=0.4) Which of the following answers: a.) 0.3750 b.) 0.2720 c.) 0.1800 d.) 0.3(1- X

Stats

Your boss has determined that on Wednesday, 5 random employees on the line have a chance to obatin a 25 dollar bonus if they produce more XT34's than 84 percent of other employees on the line. Randomly choose five workers from the sample and determine if they will get the bonus. Hint use a Z-score. employee# Number Produced o

Actual percentage is calculated.

In a magazine article, the most recent approval rating of the president is reported. The parcentage of citizens who favor the president, despits his recent invlovement in a scandal, is 68% with a margin of error of +/-4%. What does this mean?

Quantitative analysis

The solution converts this linear problem into excel using solver and shows the sensititive analysis. 10. Muir Manufacturing produces two popular grades of commercial carpeting among its many other products. In the coming production period, Muir needs to decide how many rolls of each grade should be produced in order to maxi

Operation Management

*See attachment for tables* Problem - 1: A storage company has identified a new location to build climate-controlled storage units and rent them. Storage units will be built in three sizes. These are 10x10 ft, 10x15 ft, and 10x20 ft. The monthly operating cost for each type of storage unit, and the monthly amount they wi

Calculating Overall mean and Inferential tests

I. Which measure of central tendency would you use to summarize the data below? 11.2, 13.9, 15.8, 16.6, 28.2, 12.1, 17.3 a. Arithmetic mean b. Mode c. Median d. Weighted mean II. Use the following scenario presented below to answer questions 1 to 2: January rainfall (mm) was recorded at four weather stations a

Elemantary Statistics

Suppose a wildlife service wishes to estimate, with 99% confidence, the mean number of days of hunting per hunter for all licensed hunters in the state during a given season, with a bound on the error of estimation equal to 2 hunting days. How many hunters must be included in the survey? Assume that the data collected in earli

General Statistics on Population

Problem: Please accept only if willing to explain. A POPULATION consists of these values: 2,3,6,8,11,18. a) Find Mean and Standard Deviant b) List all samples of size n=2 that are obtained without replacement. c)Find the population of all values of the mean of the values in a sample by finding mean of each sample from part b

Quartiles in Stem-and-Leaf Plots

Students collected data for a project for statistics class, and were asked to find the mean, median, mode, range, upper quartile, lower quartile, interquartile range, and standard deviation. Then, they were asked to plot the data in a stem-and-leaf plot, dot plot, histogram, and box-and-whisker plot. Explain how the students

Only for OTA 103997

Only for above listed OTA 1 set of information with a) solving for sd using conceptual formula and b)solving for sd using computational formula. Information: Mean:37/6=6.17 Median:31 Mode:27 From the Raw data which is: 14,16,16,16,20,20,20,21,23,23,24,24,26,27,27,27,27,30,31,31,32,33,34,34,35,35,35,37,38,38,39,42,46,48,49

Problem 61

61. According to Forrester Research Inc., approximately 19% of Internet users play games online. The following data show the number of unique users(in thousands) for the month of March for 10 game sites(The Wall Street Journal, April 17, 2000). Site -Unique User AOLGames.aol -9416 Extremelotto.com -3955 Freelotto.com -

Statistics problems

Please use excel when necessary: The ages of the students in a statistics class ( this is asample of all statistics students at DM are: 35,28,42,40,27,35,52,40,35,38 a) What is the mean age of the students in the class? b) What is the median age of the students in the class? c) What is the mode? d) What is the range of