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
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
I need a clear explanation of Standard deviation and what to infer from it when trying to analyses a result. I know wat the medium, mode, and mean are but I am baffeled with the standard deviation I have bought book and gone to site to get an explanation but I have been left even more confused. I ran a trial pilot survey with
If scores are normally distributed with a mean of 50 and a standard deviation of 10, what percent of the scores is: (a) below 50? (b) between 30 and 55? (c) greater than 70?
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
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
In Alleghaney county a random sample of 19 residents had a mean annual income of $30,800 with a standard deviation of $8600. In Erie County, a random sample of 15 residents had a mean annual income of $25,700 with a standard deviation of $5500. Find a 90% confidence interval for the difference in mean salary.
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
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
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.
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?
 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).  Find the standard deviation of the weights of bears given in Data Set 3. See attached  Based on this data, at what weight would a bear be considered unusually heavy? How many of the
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
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).
ALL VARIABLE NAMES ARE REFERENCES TO THE VARIABLES OF THE DATA. SELECT THE SAMPLES FROM THE POPULATION. ( Population of 1 through 74, which is in the EXCEL FILE attachment.) (1) Using the size of the group as the sample size, select 10 different random samples of the same size. To do this, number each person in the populatio
A study on rental housing provided the following data on income and rent as a percentage of income for a sample of 5 rental units. Income ($000): 25, 35, 45, 75, 125
Shortly after their graduation, John and Mary bought two used vehicles. To satisfy their curiousity, they started to record their kilometrage each time they filled their gas tanks. After ten weeks, their records show the following numbers of kilometres per litre. Mary: 17, 19, 16, 15, 18, 18, 20, 22, 15, 15 Mean= 17.5 Stan
In determining the value of a variable, four scales of measurements are used. Describe these scales of measurements and provide examples.
What kind of variable is a geographic location? a. discrete b. continuous c. qualitative d. quantitative
Billy is collecting bottle caps from his favorite brand of soda pop. The company that produces it runs a contest: each bottle cap shows a picture of one of the 50 states of the United States, with each state equally likely. If you collect all 50 states, then you win a cash prize. 1. Find the e-value of your distribution of th
Quantitative Analysis (Show All Work) #1 Solve the following Game: Y1 Y2 X1 -5 -10 X2 12 8 X3 4 12 X4 -40 -5 #2 For the following two-person, zero-sum game, are t
The specific questions I need help with are part of statistics homework. My progress so far is in an excel spreadsheet. The source data is labeled "case data", and the different responses are in different worksheets. Here are the questions: Produce a histogram for each data set. (DONE) Compute descriptive statistics (
An introductory statistics study guide including definitions of terms and types of variables and scales.
Terms defined and/or explained: randomness, independence, continuous, discrete, and ranked variables, attributes, derived and transformed variables, nominal, ordinal, interval, and ratio scales, scale conversions, mode, median, mean, range, standard deviation, sum of squares, variance, degrees of freedom, normal distribution, pa
Here is Appendix N. I need to calculate the three measure of central tendency. Also, develop a five and seven class frequency distribution table for the data. Please show steps so that I can follow it to compare my solution.
1) A test has the following properties: mean = 100, S.D. = 15, and r = .74. An individual has obtained a score of 85 on this test. Compute his or her SEM (standard error of measurement) and determine the scores that would be needed to develop a 95% confidence interval for this specific individual. 2) For the data listed be
MULTIPLE CHOICE QUESTIONS In the following multiple choice questions, circle the correct answer. 1. A numerical value used as a summary measure for a sample, such as sample mean, is known as a a. population parameter b. sample parameter c. sample statistic d. population mean e. None of the above answers is cor
What are levels of data and central tendancy? How is the standard deviation and semi-interquartile range calculated?
A random sample of 15 women yielded a mean pulse rate of 74.5 beats/minute with a standard deviation of 9.6. A random sample of 12 men yielded a mean pulse rate of 76.0 beats/minute with a standard deviation of 8.7. Test the claim that pulse rates for men and women are the same. Use V = 0.01. Use the traditional methods f
A. What is the implied population? b. What is the sample? 2. Draw a bar chart/graph for the following data 3. Find the mean, median, mode and standard deviation of the data from problem 2. 4. Find the probabilities for the random variable x 5. Find the mean, mode and standard deviation for the data in proble
A scientific calculator operates on the average 5.3 hour before needing a recharge. According to Chebyshev's theorem, if the operating times have a standard deviation of 0.6 hour. A. Between what 2 values will at least 75% of the operating times fall? B. At least what percentage of the operating times will fall in the interval