An important part of the customer service responsibility of a cable company relates to the spread with which trouble in service can be repaired. Historically, the data show that the likelihood is 0.75 that troubles in a residential service can be repaired on the same day. For the first five troubles reported on a given d
Your company's internal auditor believes that 10% of the company's invoices contain errors. To check invoices are randomly selected and 5 are found to have errors. What is the probability that of the 20 invoices written,five more would contain errors if the theory is valid? =
In a report on high school graduation, it was stated that 85% of high school students graduate. Suppose 3 high school students are randomly selected from different schools. What is the probability that all will graduate?
Joe is considering pursuing an MBA degree. He has applied to two different universities. The acceptance rate for applicants with similar qualifications is 25% for University A and 40% for University B. What is the probability that Joe will not be accepted at either university? =
Employees of a local university have been classified according to gender and job type. Gender Job Male (M) Female (F) Faculty (FA) 110 10 Salaried staff (SS) 30 50 Hourly Staff (HS) 60 40 If an hourly employee is selected at random what is th
1.Suppose that 10 percent of all the new steel-belted radial tires shipped to a large department chain store are defective. Find the probability that in a shipment of 30 such tires: a. At most two are defective. b. At least two are defective. 2.Surveys show that 40% of all convenience
Determine the mean, the variance, and the standard deviation of the following discrete distribution. x P(x) 0 .103 1 .118 2 .246 3 .229 4 .138 5 .094 6 .071 7 .001 According to a recent survey, the probability that a passenger files a complaint with the Depar
1. At Penn State, 60% of the students are from the southern part of the U.S. 30% are from the north, and the remaining 10% are from another country. All students must take and pass an Entry Level physiology test test. 60% of the southerners have passed the physiology test, 70% of the northerners have passed the test, and 90% o
2. A system uses one of two networks to send binary information, where only one of those networks is used to send all bits of a single block of 5 bits. When network 1 is used the probability of an error in one bit is 0.1 and when network 2 is used the probability of error in one bit is 0.3. The probability of an error in using
Jim Sears manufactures farm equipment. His work requires the use of steel bars which must have a mean length of at least 50 inches. The bars can be purchased from a supplier in Kansas City whose bars average only 47 inches with a standard deviation of 12 inches, or from a supplier in Dallas whose bars average 49 inches with a st
Phone calls arrive at the rate of 48 per hour at the reservation desk for Regional Airways. Assume that the distributions of arrivals can be approximated by the Poisson probability distribution. (hint: make sure you know Ã?µ for each question). Determine the probability of receiving at most three calls in a five-minute inte
As a quality engineer working on the Parts a Million production line, you have determined that the probability of producing a defective part is 6%. You want to develop a plan to monitor the quality of this line. Your idea is to take a sample of 20 parts every hour and determine the number of defectives. How many defectives do yo
General Questions on Probability and Analysis of Variance. STATISTICS QUESTIONS: 1. Which of the following is a correct statement about a probability? a. Probability values range from 0 to 1, inclusive. b. Probabilities may assume negative values. c. Probabilities may be greater than 1. d. Probabilities are limited to
Suppose a ship is searching visually for a life raft and that at time t, range is r(t) and detection rate is gamma(t) = 40 / r(t)^3 hr^-1, with t in hours, and r(t) in nm. The ship starts the search at an initial range of 2 nm and approaches the life raft on a direct course at a speed of 10 knots. Answer the following:
Please explain to me how to do this question. Consider a case where the probability of one object giving the desired result is not 1/2. Suppose you tossed a die (one half of a pair of dice). The probability of six dots coming up is 1/6. Now suppose you tossed the dice. Calculate the probability of only one die showing six dot
a bank has the following data on the gender and marital status of 200 customers: single 20 male 30 female, married male 100 female 50, a. what is the probabilty of finding a customer who is single? b. if a customer is female, what is the probability that she is single? c. what is the prpobability that a customer is male or fema
Probability in a sampling of computer cases being defective, rate is usually 5% In a sampling of 6 what is the probability of 0 being defective, and what is the probability of exactly one being defective If 0 or 1 out 6 is defective, process is in control, if the true proportion of defective items is 0.15 what is the prob
The following table gives the number of Property Crimes by category of crime and geographical region. East South Midwest West Totals Burglary 75 128 29 52 284 Motor Vehicle Theft 233 514 104 251 1102 Larceny
The weights of the 100 boys in the Boy Scout Troop 829 are normally distributed with a mean of 170 pounds and a standard deviation of 5 pounds. a. What is the probability that a boy picked at random weighs less than 165 pounds? b. How many boys would you expect to weigh between 161 and 173 pounds? c. Find the 96th perce
(Please help me solve this problem and show all work and steps in completing it. Thank you.) Ranger Inc. makes two shipments of products each month (shipment A and shipment B). The two shipments are made using the same mode of transportation and they are sent independantly of one other. (i.e., they are not shipped at the sa
*PLEASE SHOW ALL WORK FOR COMPLETING THIS PROBLEM SO THAT I KNOW HOW TO DO IT IN FUTURE SITUATIONS* From past information, XYZ has collected the following data for the # of building losses per year for their 80 buildings. # of building losses per year # of buildings having these losses 0
Three in five adults in the U.S. own an answering machine. In a random sample of 12 adults, what is the probability that the number owning answering machine is: A) exactly nine, B) at least nine, C) What is the expected value of the random variable defined in this problem?
A recent survey reported in Business Week dealt with the salaries of CEOs at large corporations and whether company shareholders made money or lost money. CEO Paid More CEO Paid Less Than $1 Millio
Solve the following Problem: Pb. 6 In a study designed to determine patientâ??s acceptance of a new pain reliever, 100 physicians each selected a sample of 25 patients to participate in the study. Each patient, after trying the new pain reliever for a specified period of time, was asked whether it was preferable to the pain
Please see the attached file for the data to go along with these questions. 1.23 Solve the following problem Given the number of male births in German families with eight offspring. One model that might be considered for these data is the binomial distribution. This problem requires a goodness-of-fit test. (a) Estimat
Solve the following problem: Find 95% confidence intervals for the population percent dying based on these data: (1) 199 of 13,078 electronics technicians died of disease; (2) 100 of 13,078 electronics technicians died of circulatory disease; (3) 308 of 10,116 radarmen died (of any cause); (4) 441 of 13,078 electronics techni
A researcher measures the following scores for a group of people. The X variable is the number of errors on a math test, and the Y variable is the person's level of satisfaction with his/her performance. A.) With such ratio scores, what should the researcher conclude about this relationship? B.) How well will he be able
In what situations might you use probability as a manager to approach business-related problems? What are the advantages to using probability concepts in business decisions? Are there any disadvantages or possible pitfalls to avoid using probability in business?
Suppose in a particular county in Maryland the mean number of motor vehicle deaths each year is 35.4. A) Find the mean number of deaths per year. B) Find the standard deviation of deaths per day. C) Find the probability that on a given day, there are more than 2 motor vehicle deaths. D) Is it unusual to have more than 2 moto
Please help with the following statistics related problems. Jane Doe learns that the newland Agency has hired only 15 women among its last 40 new employees. She also learns that the pool of applicants is very large, with an equal number of qualified men and women. A) Find the probability that among 40 such applicants, the