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Quantative Analysis of Data

Random Process: The Mean and Autocorrelation

Question: Random process X(t) = A exp(-t), t > 0 where A is a random amplitude with pdf f_A(a) that is uniformly distributed over -1 to + 1. Compute the mean and autocorrelation of random process X(t). Is X(t) a WSS process?

Uses of statistical information in Healthcare

Hello, I need help with "uses of statistical information" in healthcare. I need to figure out what data in important to a healthcare organization, description of data, data definitions and type, and discuss the advantages of accurate interpretation. Word count 400 Cite and reference data (website) Example of data: Uses of

Statistical Form Report on a Dataset

Please assist with these problems and use two separate Excel for each problem. The same attached file information is used for both problems. 1.Using the water use data set analyze the data using Excel and report in proper statistical form/jargon about the dataset. 2. Using the water use data set analyze the data using Exc

Quantitative Methods

1.A machine costs R500 000 and will depreciate to a scrap value of R15 000 in 10 years. Using reducing method of depreciation, calculate the book value of the machine at the end of the fifth year. Show your workings. 2. A machine that costs R100 000 is expected to last 5 years and then scrapped for R15 000. Its expected ret

Quantitative Methods Problem Solving

The following table gives the marks (out of a total of 50 ) scored by 30 candidates in an examination : 5 5 7 10 10 11 12 15 16 17 19 19 19 20 20 20 20 21 26 26 27 28 30 30 33 36 37 37 40 45 1. Using class intervals equal to 5 marks, construct a less than cumulative frequency distribution of the above data. Let 5 be the

What is the Mean, Median, Mode and Standard Deviation?

What is the Mean, Median, Mode and Standard Deviation using the following: SAMPLE DATA: 2, 5, 7, 11, 12, 16, 16 1) What is the mean of X of the data above (TO THE NEAREST 1/10)? 2) What is the median of the data above? 3) What is the mode of the data above? 4) What is the standard deviation of the data ab

Machine Operation Quantitative Analysis

The table below gives the times during working hours in a factory when a certain machine is not operating as a result of a breakdown: TIME(MINUTES) NO. OF BREAKDOWN 0 - 9 3 10 - 19 10 20 - 29

Discounts and Carrying Costs

A distributor of metal detectors has an annual demand of two thousand units for a certain type.The cost to the distributor is $400 per detector, carrying cost is estimated to be 20% of the unit cost and the ordering cost is $25 per order. If the Distributor orders in quantities of 250 or more, he can get a discount of 10% on the

Quantitative Analysis of Vending Machines

An automatic machine that fills containers appears to be performing erratically. A check of mass of the contents reveals the following: MASS (grams) NO. OF CANS 130 - 139 2 140 - 149 8 150 - 159 20 160 - 169

When a pizza restaurant's delivery process is operating effectively

When a pizza restaurant's delivery process is operating effectively, pizzas are delivered in an average of 45 minutes with a standard deviation of 6 minutes. To monitor its delivery process, the restaurant randomly selects five pizzas each night and records their delivery times. a. For the sake of argument, assume that the p

True Mean and Standard Deviation

I have created 95% confidence interval estimates of the population mean µ from your data in columns E and F. I have used the fact that I know σ is 6.5, that the sample was from a normal population, and that you all took samples of size 10. Therefore, the interval becomes sample mean ± 1.96*6.5/3.16. (3.16 is the appro

Finding the mean and the median (3 questions)

(1.) Using a random sample from 2002 general Social Survey, you find the following grouped distribution Age Category Frequency 18-29 54 30-39 54 40-49 60 50-59 36 60-69 31 70-89 27 a- Calculate the median age category. b- Also,

Prob dist Question

Highways -car speed X~N(60 ml/h, 5ml/h) That is, the car speed on highway is normally distributed with mean of 60 mph, and standard deviation of 5 mph. If police tickets the top 5%, at what speed you expect to get a ticket?

Various stat questions

Section 1 - Applications of Unconstrained Optimization 1) A perfectly competitive pumpkin patch faces the following cost function: TC(Q) = 14Q2 - 650Q + 15 And the patch sells pumpkins for $15. What is the profit maximizing output? Is the output you found a profit max? Show. 2) A local hammer manufact

Descriptive Statistics Presentation

Look at the attached file, then prepare a 1,100 word paper addressing the topics below. 1. Calculate the measures of central tendency 2. Calculate the dispersion. Calculate the plus/minus 1,2, and 3 Sigma (standard deviation) ranges. 3. Display 3 different aspects of your descriptive statistical data using gr

Help With Statistics

1. What information does each measure of central tendency provide? 2. Why are measures of variability essential statistical tools for describing behavior? 3. How do standard scores assist you in determining relative standing and in making comparisons between groups? 4. What happens to the mean in a skewed distribution?

Hypothesis Estimations for Tax Refunds and Car Ownership

Question 3 You wish to estimate with 95 percent confidence the proportion of families that own two cars. a)How large a sample do you need if you allow an error of up to 2 percent in each direction? b)What will be the sample size if your prior estimate for p was 0.7? Question 4 A sample of 400 people getting a tax refu

Research Report

This is a project run preparing for the real project, we will not be gating graded on this however, it is to prepare for the final project. Can you help me on this one? I attached the problem as well as the data. Write a research report that answers these questions and any other questions, you want to add, to help your cli

Descriptive Statistics

Question 1 Use Excel & Put all related data in a single column. A. A headline in a newspaper reported that crime was on the decline. Listed below are the numbers of homicides from 1989-2005 Year Homicides Year Homicides 1989 21 1998 3

Quantitative vs. qualitative? level of measurement?

1. Consider the various variables in this Baseball 2005 data: Number of wins, team salary, season attendance, whether the team played its home games on a grass field or an artificial surface and the number of hits and runs. (a) Which of these variables are quantitative and which are qualitative? (b) Determine the levels o

Sampling Distribution of the Mean

Sampling Distribution of the Mean. See attached file for full problem description. The Golden Calendar Company has population of 16 customers. These customers are brokers who sell the calendars to stores and catalogs. The following data reflect the number of calendars sold to each of the 16 customers last year. Information

Statistics Problems

1. Indicate which would be the independent variable and which would be the dependent variable in each of the following: a. Score on the first test, Final grade b. Gas mileage, Car speed c. High school grade point average, Freshman College grade point average d. Crop yield, Rainfall 2. A math test was given with the foll