Distribution, Deviation and Mean
Three tables listed below random her probabilities how ever only one of these is actually a probability distribution. a. Which is it? x p(x) x p(x) x p(X) 5 .3 5 .1 5 .5 10 .3 10
Probability
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Probability and Statistics question
Each salesperson at stiles compton is rated either below average, average, or above average with respect to sales ability. Each salesperson is also rated with respect to his or her potential for advancement: either fair, good or excellent. These traits for the 500 sales people were cross classified into the following table.
Calculations for Probability in Excel
I've tried to do the problem below using Excel, specifically Megastat. I must not be doing it right. Could you please help me using an Excel format? A normal population has a mean of 80.0 and a standard deviation of 14.0. a. Compute the probability of a value between 75.0 and 90.0. b. Compute the probability of a value 75.0
Poisson Distribution
True or false: Suppose that the number of airplanes arriving at an airport per minute is a Poisson process. The average number of airplanes arriving per minute is 3. The probability that exactly 6 planes arrive in the next minute is 0.0504.
Calculating Probability in a Normally Distributed Sample
The number of column inches of classified advertisements appearing on Mondays in a certain daily newspaper is normally distributed with a population mean of 320 and a population standard deviation of 20 inches. 1. Referring to the table above, for a randomly chosen Monday, what is the probability there will be less than 340
Probability: What is the probability a particular chain has under $1 million in income after taxes?
A study of 200 grocery chains revealed these incomes after taxes. incomes after taxes num of firms under $1million 102 $1 million to 20 million 61 $20 million or more 37 a. What is th
Probability of a discrete random variable
You are asked to match three songs with the performers who made those songs famous. if you guess, the probability distribution for the number of correct matches is: Probability .333 .500 0 .167 number correct 0 1 2 3 What is the probability you get: a) exactly one correct b) a
Probability of rain in two cities
The probability that it rains in Cincinnati, on a spring day is 0.45. Given that it is raining in Cincinnati, the probability that it is also raining in Cleveland, is 0.72. What is the probability that it rains in both Cincinnati and Cleveland on the same spring day?
Example of Sample Space in an Random Experiment
SOME PEOPLE ARE IN FOUR OF REDUCING FEDERAL TAXES TO INCREASE CONSUMER SPENDING AND OTHERS ARE AGAINST IT. TWO PERSON ARE SELECTED AND THEIR OPINIONS ARE RECORDED. LIST THE POSSIBLE OUTCOMES.
The order point and safety stock
Calculate the order point and safety stock for a printer model with DDLT historical data that is believed to be representative of future demand. Given that the actual DDLT is a range how do I proceed to calculate these numbers? My excel spreadsheet has the data attached.
Complement Probability
If P(A) = .02, P(A or B)= .40 and P(AB) =0.1, what is the probability P(~B)?
Ways to Select a Committee with Specific Gender Requirements
The school board of a public school system must select a finance committee of 5 from its 15 man, 8 woman membership. In how many ways can this committee be selected so that it consists of 3 men and 2 women?
Binomial Distribution and NC Army National Guard
In the military, everything works of numbers. Recruiting is a good example of a binomial distribution. I'll use NC Army National Guard for an example. The NCARNG must have a set number of enlistments every year and they get the requirement for the year during October. This year the number is: 2000 (so n = 2000), the 2 ou
Determine the portion of time the staff person is busy and how long a guest must wait for his or her request to be addressed.
The Delacroix Inn in Alexandria is a small exclusive hotel with 20 rooms. Guests can call housekeeping from 8:00 am to midnight for any of their service needs. Housekeeping keeps one person on duty during this time to respond to guest calls. Each room averages 0.7 call per day to housekeeping (Poisson Distributed), and a gues
Binomial Probability Distribution and Probability
1. Suppose that the number of cars, X, that pass through a car wash between 4:00pm and 5:00pm on any sunny Friday has the following probability distribution: X 4 5 6 7 8 9 P(X=x) 1/12 1/12 ¼ ¼ 1/6 1/6 What is the probability that at least 7 car
Probability and Discrete Probability Distributions Model
In paragraph form, create an example in everyday life that uses the binomial distribution as a model. Make sure that you explain how your example fits the requirements for a binomial distribution.
Prove that no matter what the posted odds
Based on the betting model in the Two-horse race_01.xls spreadsheet, prove that no matter what the posted odds and the bets received are, the expected loss/gain is always zero. How can the bookmaker make sure he can earn a certain amount that is above the expected zero income from the betting? See attached file for ful
Normal approximation to binomial
A multiple-choice examination consists of 90 questions, each having possible choices a, b, c, d, and e. Approximate the probability that a student will get at least 21 answers correct if she randomly guesses at each answer. (Note that, if she randomly guesses at each answer, then the probability that she gets any one answer corr
Probability of normal distribution
A cola-dispensing machine is set to dispense on average 7.00 ounces of cola per cup. The standard deviation is 0.10 ounces. The distribution of amounts dispensed follows a normal distribution. a. What is the probability that the machine will dispense between 7.10 and 7.25 ounces of cola? b. What is the probability that t
Statistical Process Control Help
1. A medical supplies company buys its supplies in bulk and redistributes them to doctor's offices and clinics. They receive thermometers in lots of 500 from the vendor. They are considering a sampling plan of n=50 and c=1. a. Develop a OC curve for this sampling plan. (Use Poisson Tables) b. If an incoming lot has 5% defectiv
Automobile mileage for company's sales force
Distances driven by the sales force average 5,650 miles a month, and has a Standard Deviation of 120. Lower limit for calculation is 5,500. What percentage drove 5,500 miles or more in a month? Would like to see in Excel format to identify relevant formula.
find the mean and standard deviation
The below table lists the last digits of the 73 published distances (in feet) of the 73 home runs hit by Barry Bonds in 2001 when he set the record for the most home runs in a season (based on data form USA today) The last digit of a data set can sometimes be used to determine whether the data have been measured or simply report
Returned checks at a business
Issue: Returned checks at a business. 12% are returned for insufficient funds. 50% of this 12% the customer received cash back. 10% of all customers ask to receive cash back at the end of a purchase. For 1000 customer visits calculate the following: a) Insufficient funds? b) Cash back? c) Both insufficient funds an
Probability
Express the indicated degree of likelihood as a probability value. *"it will definitely turn dark tonight." a. 0.5 b. 1 c. 0.30 d. 0.67 *Which of the following can not be a probability? a. 1 b. 0 c. -1 d. 2 *Answer the question,considering t
Quantitative Methods: Finding Probability
Potato chip are sold in 12 oz bags. The bag weights are expected to be normally distributed about this standard. If the standard deviation of the bags is 0.58 oz would it be unusual to find a bag containing 11 oz. The Frito Lay CEO wants to know if it will be unusual for a bag to be 10% or more short.
Quantitative Methods - Simulation to Demonstrate Probability
As you discussed earlier, four students called in to say they would miss their exam due to a flat tire. On the make-up exam the instructor as each student to list the tire that was flat. We concluded that there was only a 1/64 chance that all four would randomly agree if they actually had not had a flat. Simulate the situatio
Quantitative Methods - should a plane go commercial probability
Management is considering going live with a new product that research believes is promising. Engineering estimates that if a $300,000 pilot plant is build there is a 0.75 chance of a high yield versus the alternative of a low yield. If the pilot plant shows a high yield they believe there is a probability of 0.8 that the comm
Quantitative Methods - probability of colored marbles
What is the probability of getting at most 3 white marbles when drawing 5 marbles from a bucket containing 5 white marbles and 5 black marbles?
Determining Probability: Duration of Drug Effectiveness
Researchers at a pharmaceutical company have found that the effective time duration of a safe dosage of a pain relief drug is normally distributed with mean 2 hours and standard deviation 0.3 hour. For a patient selected at random: a) What is the probability that the drug will be effective for 2 hours or less? b) What i
Calculating the Probability of Occurrence
Roger has read a report that the weights of adult mail Siberian tigers have a distribution which is approximately normal with mean = 390 lb and standard deviation = 65 lb. a) Find the probability that an individual male Siberian tiger will weigh more than 450 lb. b) Find the probability that a random sample of 4 male Siberia