1- The following data summarizes the historical demand for a product Month Actual demand March 20 April 25 May 40 June 35 July 30 August 45 Use exponential smoothing with and the smoothed forecast for July is 32 and determine August and September's smoothed forecasts. 2- 15. Robert has the following accoun
What do you know about regression analysis? What is the regression analysis good for?
Word problems / multiple choice questions on correlation, regression, ANOVA and testing of hypothesis problems.
(See attached files for full problem descriptions) Problems One The analysis of variance technique is a method for a. comparing three or more means. b. comparing F distributions. c. measuring sampling error. d. none of the above. A treatment is a. a normal population. b. the explained population. c.
(See attached file for full problem description) Let f be a continuous real-valued function on a metric space X, , and . Show that E is a closed set.
Regression line,miles per gallon, weight of the automobile, Hypothesis test, 90% confidence interval, Annual cigarette consumption, Mortality rate, coronory heart disease
See attached file for full problem description
A) These are heights and weights for five randomly-selected adults. Units are centimeters and kilograms, respectively. height 183 172 190 167 193 weight 91 83 99 83 104 a. Find a linear regression equation which predicts weight as a function of height. Be sure to define your variables clearly. b. Accordin
Health experts recommend that runners drink 4 ounces of water every 15 minutes they run. Although handled bottles work well for many types of runs, all-day cross-country runs require hip-mounted or over-the-shoulder hydration systems. In addition to carrying more water, hip-mounted or over-the-shoulder hydration systems offer mo
6) The following regression line shows how the monthly return for the mutual fund TWCUX (Twentieth Century Ultra Fund) is mathematically related to the S&P500 monthly return. TWCUX = -2.61 + 1.27 (S&P500) Explain what both the intercept and slope of the regression line tell you in the context of this problem. Calculate
Super Markets, Inc. is considering expanding into the Scottsdale, Arizona, area. Ms. Luann Miller, Director of Planning, must present an analysis of the proposed expansion to the operating committee of the board of directors. As a part of her proposal, she needs to include information on the amount people in the region spend per
A CEO of a large pharmaceutical company would like to determine if he should be placing more money allotted in the budget next year for television advertising of a new drug marketed for controlling asthma. He wonders whether there is a strong relationship between the amount of money spent on television advertising for this new d
YEAR GNP ln(gnp) 1975 1060 6.966024187 1976 1170 7.064759028 1977 1305 7.17395832 1978 1455 7.28276118 1979 1630 7.396335294 1980 1800 7.495541944 1981 2000 7.60090246 1982 2220 7.705262475 1983 2450 7.803843304 1984 2730 7.912056888 The US BNP during the years 1975-1984 is given in the above table. a. Plot x
Test of hypothesis: Chi square test for goodness of fit, Chi square test for independence of variables, Regression
1) A sales manager is curious whether day of the week makes any difference in number of sales made. She decides to sample the records to determine if sales are distributed evenly throughout the six-day workweek. The sample results are: Day of Week Sales Made Monday 6 Tuesday 9 Wednesday 11 Thursday 10 Friday 10 Saturda
Multiple Regression Models and Simple Linear Regression Models (21 Problems) : Least Squares, Durbin-Watson, Correlation Coefficient, Standard Error and p-Values
1. The y-intercept (b0) represents the a. predicted value of Y when X = 0. b. change in estimated average Y per unit change in X. c. predicted value of Y. d. variation around the sample regression line. 2. The least squares method minimizes which of the following? a. SSR b. SSE c. SST d. All of the above TABLE 1 A
A. Your function, and specify what the slope and intercept of your function is. B. What this function tells you about the relationship between the price and the number of cups sold? C. How you plan on using this function to help you maximize the profits of your lemonade stand? data: regression equation: y= -100x + 250
The data below present the results of a hydrological investigation of the Snake River watershed. The main purpose of the investigation was to forecast the water yield (y inches) from April to July using the weighted water content of snow (x), estimated on April 1. Year X Y Year X Y 1919 23.1 10.5 1928 37.9 22.9 1920 32.8 1
Please see the attached files for the fully formatted problems. This program calls for the use of a stats program called "minitab". If you want to use minitab but don't have it, you can get a 30 day download of it at http://www.minitab.com/products/minitab/14/demo/ If you want to use minitab, I've included the minitab
Please follow these instructions: The following are a set of worksheets on prob/stats. You can find the answers to the questions at: http://www.rossmanchance.com/iscam/invSols.html you can also find an applets or data sets at: http://www.rossmanchance.com/iscam/instructors.html Here is what I'd like for you to
Please see the attached file for the fully formatted problems. Question 1 During 2002 the number of beds required per day at St Hallam's hospital was normally distributed with a mean of 1800 and a standard deviation of 190. During the first 50 days of 2003 the average daily requirement for beds was 1830. A senior hospita
Using the following information answer the following questions. Year Population 1860 379, 994 1870 560, 247 1880 864, 694 1890 1,213, 398 1900 1,485, 053 A) What is the linear regression function for this data? Write all decimal points. B) What does the model predict
Demonstrate using regression functions by explaining what a regression function is and the factors which should be considered when interpreting results.
Perform power regression on these data, and then choose the one option describing a situation which these data could represent.
This question concers the following data lists x 3 4 5 6 7 9 10 y 4.6 4.0 3.6 3.3 3.0 2.7 2.5 It is thought that x and y are related by a power relationship, that is, a function of the form y=ax^b. Perform power regression on these data, and then choose the one option describing a situation which these
Perform linear regression on these, data taking the price as the independent variable and the quantity sold as the dependent variable, and then choose three FALSE statements.
The data below show the price, in pence per kg, charged by a market-stall holder for apples, and the quantity, in kg, sold in a day when she charges these prices. Price/p per kg 75 85 100 115 130 150 Quantity sold/kg 50 47 43 40 35 30 Perform linear regression on these, data taking the price as the independent varia
Please help with the following problem. Provide at least 200 words in the solution. I know that a standardized regression coefficient is able to provide us with a ranking of the relative importance of each independent variable in a regression model. However, I am confused about the difference between the standardized and reg
My data set contains five variables for 96 nations in the world. Onlinepop Online Population PC's Number of Personal Computeres Phones Number of landline phones Educ Percent of GNP spent on education GNPPC Gross National Product per capita Here is correlatio