Do you think the Poisson distribution, which assumes independent arrivals, is a good estimation of arrival rates in the following queuing systems? Defend your position in each case. -cafeteria in your school -barbershop -hardware store -dentists office -college class -movie theater
I have the following: Decision Variable A: rating =80% weighting = 5% Decision Variable B: rating = 30% weighting =10% Decision Variable C: rating = 53% Weighting = 50% Decision Variable D: rating = 10% weighting = 15% Decision Variable E: rating = 57% weighting = 20% Determine the overa
1) A container contains 3 slips of paper numbered 1, 2, and 3 respectively. A slip is randomly selected and replaced and then another slip is randomly selected. If A is the event that the same number is drawn each time, how many outcomes are in the event not A? 2) If you rolled a die. What would be the probability
1. The useful life of an electrical component is exponentially distrbuted with a mean of 2500 hours. (a) what is the probability the circuit will last more than 3000 hrs. (b) what is the probability the circuit will last between 2500 and 2750 hours (c ) what is the probability the circuit will fail within the first 2000 hr
1. For a standardized normal distribution calculate the following probabilities a. P(0.00 < z < or equal to 2.33) b. P( -1.00 < z < or equal to 1.00) c. P( 1.78 < z < 2.34). 2. A random variable is normally distributed with mean of 25 and standard deviation of 5. If an observation is randomly selected a. what val
Annual rainfall in Boquete, Panama is normally distributed with a mean of 43 inches, and a standard deviation of 3.8 inches. What is the probability that this year's rainfall exceeds 35 inches? A. 0.9824 B. 0.3285 C. 0.7692 D. 0.5
Note that answers are given. Please show the workings to arrive at the answers. An auditor for an insurance company in Alberta reports 40 percent of the policyholders 55 years or older submit a claim during the year. 15 policyholders are randomly selected for company records a) how many of the policyholders would you expe
Students in the industrial statistics lab at ASU calculate a lot of confidence intervals on mu. Suppose all these CIs are independent of each other. Consider the next one thousand 95% CIs that will be calculated. How many of these CIs do you expect to capture the true value of mu? What is the probability that between 930 and
Please see attachment and explain all work. #1 Suppose that 40% of all cell phone owners have sent or received text messages. A sample survey interviews an SRS of 2000 cell phone owners. a) What is the actual distribution of the number X in the sample who have sent or received text messages? b) What is the probability
Jim's systolic blood pressure is a random variable with a mean of 145 mmHg and a standard deviation of 20 mmHg. For Jim's age group, 140 is the cutoff for high blood pressure. If Jim's systolic blood pressure is taken at a randomly chosen moment, what is the probability that it will be, (a) 135 or less? (b) 175 o
Using Excel, please demonstrate use of functions to solve the following probability problem. Tired of careless spelling and grammar, a company decides to administer a test to all job applicants. The test consists of 20 sentences. Applicants must state whether each sentence contains any grammar or spelling errors. Half the sen
Farrell Corporation's common stock is $25. The price is expected to increase by $5 over the coming year. The standard deviation of the expected price is $3. The distribution of the end of year possible price is approximately normal. Determine the probability of earning a return greater than 30 percent over the coming year from
Dotties Tax Service specializes in federal tax returns for professional clients, such as physicians, dentists, accountants, and lawyers. A recent audit by the IRS of the returns she prepared indicated that an error was made on 15 percent of the returns she prepared last year. Assuming this rate continues into this year and she p
The population of IQ scores forms a normal distribution with a mean of u=100 and a standard deviation with a mean of sigma=15. What is the probability of obtaining a sample mean greater than m=105 for a random sample of n=9 people? How do I set this problem up, what is the correct formula?
PLEASE SHOW ALL THE WORK 62. Suppose 1.5 percent of the antennas on new Nokia cell phones are defective. For a random sample of 200 antennas, find the probability that: a. None of the antennas is defective. b. Three or more of
A Tamiami shearing machine is producing 10 percent defective pieces, which is abnormally high. The quality control engineer has been checking the output by almost continuous sampling since the abnormal condition began. What is the probability that in a sample of 10 pieces: a. Exactly 5 will be defective? b. 5 o
Ms. Bergen is a loan officer at Coast Bank and Trust. From her years of experience, she estimates that the probability is .025 that an applicant will not be able to repay his or her installment loan. Last month she made 40 loans. a. What is the probability that 3 loans will be defaulted? b. What is the probability that at le
1. A random variable is assigned numerical values based on the outcomes of an experiment - TRUE OR FALSE 2. For a binomial distribution, each trial has a known number of successes. For example, a 4 question multiple choice test can only have zero, one, two, three or four successes TRUE OR FALSE 3. To construct a binomial p
Kolzak Appliance has just received a shipment of 10 TV sets. Shortly after they were received, the manufacturer called to report that he had inadvertently shipped 3 defective sets. Ms. Kolzak, decided to test 2 of the 10 sets she received. What is the probability that neither of the 2 sets tested is defective? Pls find the pr
In a binomal situation n = 5 and pi denotes a binomial population paramenter. Do not confuse it with the mathematical constant 3.1416. Determine the probabilities of the following events using the binomial formula - a. x = 1 and b. x = 2
Central limit theorem: Sample mean A study of college football games shows that the number of holding penalties assessed has a mean of 2.2 penalties per game and a standard deviation of 0.9 penalties per game. What is the probability that, for a sample of 40 college games to be played next week, the mean number of holding pe
The distribution of scores on a standardized aptitude test is approximately normal with a mean of 500 and a standard deviation of 105 . What is the minimum score needed to be in the top 25% on this test? Carry your intermediate computations to at least four decimal places, and round your answer to the nearest integer.
Page Engineering designs and constructs air conditioning and heating (HVAC) systems for hospitals and clinics. Currently the company's staff is overloaded with design work. There is a major design project due in 8 weeks. The penalty for completing the design late is $14,000 per week, since any delay will cause the facility to
Residents of Mill River have fond memories of ice skating at a local park. An artist has captured the experience in a drawing and is hoping to reproduce it and sell framed copies to current and former residents. He thinks that if the market is good he can sell 400 copies of the elegant version at $1.25 each. If the market is
50 percent of travelers going to visit the Rocky Mountains visit Yellowstone Park, 40 percent visit the Tetons and 35 percent visit both - What do you think the probability a vacationer will visit at least one of these attractions, what do you think a probability .35 is called and are these events mutually exclusive, please e
There is a 50 percent chance this company will earn a profit, a 30 percent chance it will break even, and a 20 percent chance it will lose money next quarter- Use the addition rule to file the probability of the company will not lose any money next quarter, and use the complement rule to find the probability rule it will not
A company will promote two employees out of a group of six men and three women, what would you say the chances of this experiment if there is particular concern about gender equity and which concept of probability would you use to estimate these probabilities?
A sample of 2,000 licensed drivers revealed the following number of speeding violations Number Number of drivers 0, 1, 2, 3, 4, 5 or more 1,910, 46, 18, 12, 9, 65 Total 2,000 What kind of experiment is this, what is one possible event, what do you think the pr
A company must hire a new CFO and prepares a final list of five candidates - all are equally qualified. Two of the candidates are members of a minority of a minority group. To avoid bias in the selection of the candidate, the company decides to select the president by lottery. What is the probability one of the minority cand
62. Suppose 1.5 percent of the antennas on new Nokia cell phones are defective. For a random sample of 200 antennas, find the probability that: a. None of the antennas is defective. b. Three or more of the antennas are defective.