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# Quantative Analysis of Data

### Some graphical LPP problems

Please show all work, Thanks ---------------------------------------------------- 1. A clothier makes coats and slacks. the two resources are wool cloth and labor. The clothier has 150 square yards of wool and 200 hours of labor available. Each coat requires 3 square yards of wool and 10 hours of labor, whereas each pair

### Provide basic statistical calculations including mean, median, mode, range, variance, and standard deviation. Also given demand equations find algebraic solutions and provide graphs.

Here are some basic demand curve questions I'd like to verify with my solutions. 1 The number of deliveries per week for a sample of six customers. 3 4 5 6 2 4 A. Calculate the mean, median, and mode measures of central tendency for t

### Statistics: A Linear Programming (LP) problem on computing costs, demand, and profit.

*10. Consider the production, sales inventory, and capacity limits stated below for the manufacture of small turbine engines used in auxiliary power units, ground support equipment and various other uses. The company expects to market the unit for \$50,000 each in quarters one and two and to raise the price to \$55,000 for the

### Examine measures of central tendency within a study

A research team at a large university hospital has just completed a pilot study of an innovative new treatment that is intended to be used to treat patients in the later stages of prostate cancer. They had 12 patients, males, ranging in age from 47 to 73. All had been diagnosed as in stage 4 of the disease within 4 weeks of agre

### Statistics definitions/questions

- what is a z-test? - what is the difference between a t-distribution and a normal distribution - provide an example. - 50 samples of a certain brand of headphones is taken from a Radio Shack warehouse. A standard deviation of 5 is assessed. What is the standard error of the mean? - to what type of binomial problem would we a

### Analysis of Customer's Incomes

You are interested in the incomes of your corporate customers. A sample of your customer's incomes yields the following distribution of incomes: \$100,000, \$200,000, \$200,000, \$300,000, \$300,000, \$300,000, \$400,000, \$400,000, and \$500,000. 1) What is the appropriate measure of central tendency and why? 2) What is the appr

### Evaluate the Effectiveness of a Large Freezer

See the attached file. INSTRUCTION: StatPro [or similar Excel addin programs] generates new sheets for each problem and deletes previous sheets with the same name. If you want to keep a sheet for your solution, then rename it immediately by prefixing the problem number. You may need suffix numbers to keep the names unique.

### Construct Hypothesis Tests in Excel for Employees

Please help setting up and solving the following problem in Excel. The problem with all necessary data are contained in the attached excel spread sheet. MegaStat or similar excel add-in program may be used for the solution. INSTRUCTIONS: StatPro [or other excel statistics program] generates new sheets for each problem an

### Estimate and Interpret a Population Variance

See the attached file. With the data below can you tell me how I would estimate and interpret a population mean with the population standard deviation unknown. Title Gross (\$) in Millions Aliens 81.843 Armageddon 194.125 As Good As It Gets 147.54 Braveheart 75.6 Chasing Amy 12.006 Contact 100.853 Dante's Peak 67.

### Survey on Population of American Intellectual Union

Details: The data set for our course is a sample of a survey conducted on the population of the American Intellectual Union (AIU). It is available via the following link: DataSet with DataSet Key which contains the following nine sections of data that will be used throughout our course: (1) Gender (2) Age (3) Department (4)

### Measuring Central Tendency

This Discussion will give you the opportunity to calculate or identify the three measures of central tendency. Select an appropriate real life situation where one measure would be more appropriate than the other two measures of center. a. Select a common topic or hypothesis and record the topic in your posting, for exa

### Standard deviation when performing a t-test

Why is it not necessary to have/use a standard deviation when performing a t-test but you need one with a z-test? If you were to add one step to better understand the five-step process, what would that be? How would it make the calculations, or process, easier?

### 3 statistic problems: percentile, box and whisker plots, interquartile range, quartiles, outliers

1. Grades: Test scores: Clayton and timothy took different sections of Introduction to Economics. Each section had a different final exam. Timothy scored 83 out of 100 and had a percentile rank in his class of 72. Clayton scored 85 out of 100 but his percentile rank in his class was 70. Who performed better with respect to th

### TRUE OR FALSE , MULTIPLE CHOICE, CONFIDENCE INTERVAL

TRUE OR FALSE 1._____The arithmetic mean is the sum of the observations divided by the total number of observations. 2._____There are always as many values above the mean as below it. 3._____The standard deviation is the positive square root of the variance. It is a measure of dispersion in the same units as the ori

### Example Questions and Answers in Statistics

Question 2: All 6 members of a family work. Their hourly wages (in dollars) are 18, 26, 31, 10, 13, 40 Assuming that these wages constitute an entire population, find the standard deviation of the population. Round your answer to at least two decimal places. Question 3: Petroleum pollution in oceans stimulates t

### Statistics: The Mean Diastolic Blood Pressure

Confidence interval for the population mean: Use of the standard normal Scenario: The mean diastolic blood pressure for a random sample of 90 people was 92 millimeters of mercury. If the standard deviation of individual blood pressure readings is known to be 12 millimeters of mercury, find a 90% confidence interval for the tr

### Statistics and Excel Formulas: Service Times

The manager of a fast-food establishment periodically monitors various aspects of its operations, including service time, i.e., the time (in seconds) between placing and receiving an order. Below are the service times for a sample of 48 recent drive-through customers. 84 78 76 95 84 101 91 78 121 99 104 95 74 8

### Qualitative variable and quantitative variable

Can you please provide one example of a Qualitative data and one example of a Quantitative Data that you face daily? Please explain why it is a Quantitative or Qualitative data and describe the scale of measurement .

### Computing mean, median, mode, variance, standard deviation

1. The ages of all the patients in the isolation ward of the hospital are 38, 26, 13, 41, and 22. What are the population mean, variance, and standard deviation? 2. The weights of a sample of seven FedEx shipments, to the nearest pound, are 10, 7, 11, 10, 13, 5, and 4. Compute the sample mean, the median, and the moda

### Quantitative methods - Expressing Constraint into algebraic expressions

Please see attached document for complete details, some of the signs may not print here. 1. Constraint Assume that x2, x7 and x8 are the dollars invested in three different common stocks from New York stock exchange. In order to diversify the investments, the investing company requires that no more than 60% of the dollars i

### Central tendency, skewed distributions, discrete and continuous probability distributions, and standard normal distributions

Question 1: When is the mean the best measure of central tendency? When is the median the best measure of central tendency? Explain. Questions 2: A researcher has determined that the distribution of annual salaries of NBA players is bell-shaped and symmetrical about the mean salary, do you think that introducing Michael

### The Bookstall, Inc., is a specialty bookstore concentrating on used books sold via the Internet. Paperbacks are \$1.00 each, and hardcover books are \$3.50. Of the 50 books sold last Tuesday morning, 40 were paperback and the rest were hardcover. What was the weighted mean price of a book?

The Bookstall, Inc., is a specialty bookstore concentrating on used books sold via the Internet. Paperbacks are \$1.00 each, and hardcover books are \$3.50. Of the 50 books sold last Tuesday morning, 40 were paperback and the rest were hardcover. What was the weighted mean price of a book?

### Calculating Dispersion and Confidence Intervals

Gas Price Gas Price Gas Price \$3.76 \$3.99 \$4.25 \$3.79 \$3.99 \$4.25 \$3.79 \$4.00 \$4.25 \$3.80 \$4.00 \$4.25 \$3.81 \$4.03 \$4.25 \$3.82 \$4.05 \$4.29 \$3.84 \$4.05 \$4.29 \$3.85 \$4.07 \$4.29 \$3.86 \$4.08 \$4.29 \$3.87 \$4.09 \$4.29 \$3.87 \$4.09 \$4.36 \$3.87 \$4.09 \$4.36 \$3.89 \$4.09 \$4.36 \$3.89 \$4.11

### Quantitative methods - Sensitivity

Please see attached 3 problems. Here's the process I want you to use to answer sensitivity questions. For attached problems, please copy and paste the sensitivity report from QM for Windows. ? Determine if the change is within the permitted boundaries. If it is, the answer to your question can be found within the data.

### Mean and Standard Deviation of Data

0 0 5 10 14 16 32 38 40 44 78 86 99 142 175 176 202 220 301 400 A) What is the mean? B) What is the Standard Deviation C) What percent of data fall between minus 2 and plus 2 standard deviations of the mean? How does this compare to the Empirical Rule?

### Sample Functions: The Mean Value of the Random Variable

The random number generator in a computer generates three-digit numbers that are uniformly distributed between 0.000 and 0.999 at at rate of one random number per second starting at t=0. A sample function from a random process is generated by summing the 10 most recent random numbers and assigning this sum as the value of the s

### Standardized Scores: z-score, percentile rank, t-score, SAT score, stanine score

1. Given a mean of 60, with a standard deviation of 12, and with a raw score of 75, find: (a) the z-score (b) percentile rank (c) t-score (d) SAT score (e) stanine score 2. Sammy Slicko bets that he can flip a coin and come up heads every time. At what point in the coin toss (5 in a row, 6 in a row, or 7 in a row), ca

### Multiple Choice Questions on Statistics concepts - sample, population, mean, median, mode, range, standard deviation, variance, probability, confidence interval estimate

Use the following information to answer questions 1 - 3. Breakdown how you got the answer. George Johnson, a concerned citizen, has decided to conduct a study of the voters in his town to determine if they approve of the way the mayor is running the government. He intends to ask 30 citizens of voting age their views in order

### Safety Stock and Reorder Point

Lead-time demand is 600 pounds. The standard deviation of lead time demand is 52 pounds. Assuming the lead time demand is normally distributed and that an acceptable risk of stocking out is 4%: a. What is the appropriate amount of safety stock? b. What reorder point will ensure you can provide a 96% service level? c. Would

### Descriptive Statistics of Housing Market

Reflect on your local housing market. How can measures of central tendency (mean, median and mode) help you to analyze the local market? Quality control is important for any business. Reflect on your own business or past experiences. How has basic descriptive statistics helped you (or your company) assess operational quality?