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Quantative Analysis of Data

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


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 -9416 -3955 -

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

Economics, Quantitative Methods, Statistics

Brief: (a)Quadratic equation and total revenue maximisation with quantity produced. (b)Manager to choose between 2 inputs (elasticities of output for both given) to maximise ouput given predetermind budget. Question: Given that the managers's aim is to maximise output, subject to the constraint in the form of the total bud

STDEV Skewness and descriptive stats

You are a member of the Citizen Budget Committee for the school districts in Northwest Ohio. You have been given a data set (Appendix M in the text; "Schools" on your text CD) for analysis. Based on that data set, please help with the following questions (attached) note: EACH SCHOOL LISTED IS A SCHOL DISTRICT - first column


A unit for a telecommunications system is to be designed so as to have a minimum availability of 0.9994. The MTTR (mean time to repair) for the unit is estimated to be 24 hours. the unit is to consist of (n) effectively identical elements in parallel, from a reliability point of veiw. if the hazard rate of each of the elements i

Assets: Minimum Variance Portfolio; Yield Expected Return

Questions Assume that there are three assets available. A is a risk-free asset with that yields a rate of 8%. The other two assets, B and S are risky asset with the following attributes. Asset Expected Return Standard deviation A B 12% 15% S 20% 30% Correlation between assets B and S

3973/72- stats

Subject: sample mean/standard deviation/alpha Details: An insurance company asserts that the mean amount paid for personal injury claims resulting from automobile accidents is $18,500. An actuary wants to check the accuracy of this assertion and is allowed to randomly sample 36 cases involving personal injury. The sample mean

3845 - Statistics

Is there sufficient evidence to conclude that tuition cost for Public differs from that of Private? Test at the .05 percent level of significance. Be sure to provide a complete interpretation of the results.

Calcuate the range, variance & standard deviation for this data series

Universal package service,ltd., delivers sm parcels to business addresses in the greater boston area. to learn more about data description on the # of deliveries/wk for a sample of 10 customers: 3 3 4 2 3 3 23 3 Calcuate the range, variance & standard deviation for this data series. which measure does the best job of describin

Psychology Statistics 240

Jamie collects the following income data (in thousands of dollars) for some of his street neighbors: 19, 21, 22, 17, 23, 19, 22, 24, 18, 21, 26, 20, 23, 23, 20, 21, 25, 20 Given that he cannot reach all his neighbors, he wants to estimate what is the average income of the whole neighborhood using just the data that he collect.

Psychology Statistics 240

The numbers of hours a week that a group of boys watch TV are: 2, 4, 6, 7, 3, 8, 5, 7, 8, 3, 7, 4 The number of hours a week that a group of girls watch TV are: 5, 7, 9, 2, 1, 0, 4, 7, 6, 5, 6, 8 Can we say that one of the two groups watches significantly more TV than the other group?

Studying For Clep

[1] Find the mean, median, and mode of the weights of bears given in Data Set 3 (this data set may be found in the back of your text). [2] Find the standard deviation of the weights of bears given in Data Set 3. See attached [3] Based on this data, at what weight would a bear be considered unusually heavy? How many of the

Standard Deviation of achievement tests

The standard deviation of test scores on a certain achievement test is . A random sample of scores on this test had a mean of . Based on this sample, find a confidence interval for the true mean of all scores. Then complete the table below. Carry your intermediate computations to at least three decimal places. Round your a

Assist With problem set

The following data represents the number of automobiles arriving at a toll booth during 20 intervals, each of ten-minute duration. Compute the mean, median, mode, first quartile, and third quartile for data... (please see attachment for remainder of questions)

Stats problem using basic excel and statpro

I have attached my original problem in word format and my answers in excel format. Could the OTA please check my work and offer suggestions where mistakes are obvious as this is the premise for me to build on in my coursework. Also, I am looking for detailed help in understanding what this data means/implies. For example, how


Included is data from cities describing the Median Education ("Education") or the Percentage of White collar workers. Divide all the cities listed into two groups: ones with median education above 11 and ones with median education below 11. Use a resampling technique to determine whether the percentage of white collar workers is

Expected value

Consider the experiment of throwing an ideal die three times(all outcomes are equally likely). Let X and M denote the mean and the median respectively, of the three scores obtained. a) find E(X)