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Simulation, Modeling, Trends and Forecasting

Forecast of volumes of pizzas that will be sold in Johnston County The number of pizzas sold will be extremely important to Lotto Pizza. Two factors will impact this number: population growth and percent of population who will purchase a Lotto Pizza. To establish the first number use the population history provided. Althou

Conditional probability, combinations, permutations

Find the number of possible combinations of picking 2 items out of 6. ------------------------------------------------------------------------------------------------------- How many permutations of answers are possible in a true-false test consisting of 10 questions? -------------------------------------------------

Probability problem: Saddam hussein

Pretend you are drawing cards without replacement from the infamous Iraq's most wanted deck issued by the us military. If you are drawing from the full deck of 55 cards, what are the folloing probabilities: a. You draw a card that is not Saddam Hussein? b. You draw two cards, which end up being Saddam Hussein and anothe

Probability of Coins Drawn

Suppose you have 6 nickels, 4 dimes, and 2 quarters in your pocket. If you draw a coin randomly from your pocket, what is the probability that a. You will draw a dime? b. You will draw a half-dollar? c. You will draw a quarter?

Operations Problem - Queuing

See attached file for full problem description. 3. The neighborhood Clinkos copier store has three copiers: C1, C2, and C3. Customers that come to the store can be categorized into two types of jobs: large volume and small volume jobs. Currently, Copiers C1 and C2 are only assigned to customers with large volume copy jobs, a

Probability and Selection with Replacement

1) A poll states that 30% of the workers in a large company have new desks. If 6 workers are selected at random, what is the probability that at least one worker has a new desk? 2) In a shipment of 20 televisions, 5 are defective. If 2 television sets are randomly selected and tested without replacement, what is the probabili


1) In the class, there are 12 freshmen, of whom 8 are males and 15 sophomores, of whom 5 are females. If one student is selected at random, what is the probability of selecting a freshman or a female? 2) In a recent poll by American Automobile Club, 40% of the surveyed said that they were worried about aggressive drivers. If

Variance and Poisson Distributions

Let X1,...,Xn be a random sample from a Poisson distribution with mean Ө. Express the VarӨ (Xi) as a function σ2 = g(Ө).


17. Shown are the percent frequency distributions of job satisfaction scores for a sample of investment banking executive managers (IB) and investment banking financial advisers. The scores range from a low of I (very dissatisfied) to a high of 5 (very satisfied). a. Develop a probability distribution for the job satisfactio

Probability and Frequency Distributions

14. Due to rising medical costs, 43 million people in the United States go without medical insurance. Sample data representative of the national insurance coverage for individuals 18 years of age and older are shown below. Medical Insurance a. Develop adjoint probability table for these data and use the table to answer the

Waiting line problem

Speedy oil provides a single channel automobile oil change and lubrication service. Customers provide an arrive rate of 2.5 cars per hour. The service rate is 5 cars per hour. Assume that arrivals follow a Poisson probability distribution and that service times follow an exponential probability distribution. a) What is the a

54 statistics and probability review problems

(17) Find the approximate percentile ranks of the following weights. A. 57 pounds b. 62 pounds c. 64pounds d. 59 pounds Weight (pounds) Frequency 52.5-55.5 9 55.5-58.5 12 58.5-61.5

The Distribution and Probability of Xbar

Let Xbar be the mean of a random sample of Size 5 from a normal distribution with &#956; = 0 and &#963;^2 = 125. Determine c so that Pr(Xbar < c)=0.90. Please see the attached file for the fully formatted problems.

Parallel treatments of a frequency distribution and a probability distribution.

Parallel treatments of a frequency distribution and a probably distribution. Frequency Distribution Complete the table below for the following data. (Recall that x is the midpoint of the interval.) 14, 7, 1, 11, 2, 3, 11, 6, 10, 13, 11, 11, 16, 12, 9, 11, 9, 10, 7, 12, 9, 6, 4, 5, 9, 16, 12, 12, 11, 10, 14, 9, 13, 10, 15,

Operation Management

Operation Management Service Process selection and Design #1 - Students arrive at the Administrative Services Office at an average of one every 15 minutes, and their requests take on average 10 minutes to be processed. The service counter is staffed by only one clerk, Judy Gumshoes, who works eight hours per day. Assume Po

Excel Queuing System

Need to solve using Excel Queuing System Sal's international barbershop is a popular haircutting and styling salon near the campus of the University of New Orleans. Four barbers work full time and spend an average of 15 minutes on each customer. Customers arrive all day long, at an average of 12 per hour. When they enter, they

The Golding Discount Department Store: Excel Queuing System Problem

Excel Queuing System The Golding Discount Department Store has approximately 300 customers shopping in its store between 9am and 5pm on Saturdays. In deciding how many cash registers to keep open each Saturday, Golding's manager considers 2 factors: customer waiting time(and the associated waiting cost) and the service costs

Need help with Project Network setup

Laura Thompson needs to plan and manage a local construction project. The following table describes the relationships between the activities that need to be completed: ACTIVITY Day A Day M Day B Immediate Predecessors A 4 8 13 B 4 10 15 A C


1. Last fall, a gardener planted 65 iris bulbs. She found that only 56 of the bulbs bloomed in the spring. a) Find the empirical probability that an iris bulb of this type will bloom b) How many of the bulbs should she plant next fall if she would like at least 92 to bloom? 2. The last 40 violent crimes committed in Scon

Prob & Stats - Sampling Distributions (6 questions)

1. Given the discrete uniform population f(x) = 1/3, x = 2, 4, 6, 0 elsewhere, Find the probability that a random sample of size 54, selected with replacement, will yield a sample mean greater than 4.1 but less than 4.4. Assume the means to be measured to the nearest tenth. 2. If the standard de

Math for Decision Making

1. The high school GPA of applicants for admission to a college program are recorded and relative frequencies are calculated for the categories. GPA f(x) x < 2.0 .08 2.0 <= x < 2.5 .12 2.5 <= x < 3.0 .35 3.0 <= x < 3.5 .30 3.5 <= x ? a. Complete the table to make this a v

Problems in Math for decision making

1. There are two more assignments in a class before its end, and if you get an A on at least one of them, you will get an A for the semester. Your subjective assessment of your performance is: Event Probability A on paper and A on exam .25 A on paper only .10 A on exam only .30 A on neither .35 a. What


What is the probability of getting three primes in five rolls of a single die? Assume that 10% of the population is left-handed. If three people are chosen at random, what is the probability that at least one will be left-handed?

Probability and Coin-Flips

Suppose you toss five coins. How many ways are there to get three heads? What is the probability of getting three heads?

Probability : Sampling without Replacement

Consider a standard deck of playing cards. You randomly select a card from the deck and find that you have drawn a face card. If you don't replace the card, what is the probability that the next card you draw will be a king?

Gamma & Exponential Distribution/Log Nominal Distribution

1. In a certain city, the daily consumption of water (in millions of liters) follows approximately a gamma distribution with ? = 2 and ? = 3. If the daily capacity of that city is 9 million liters of water, what is the probability that on any given day the water supply is inadequate? 2. In a certain city, the daily consumpti