Use the Poisson Distribution the indicated probabilities in one year, there were 116 homicide deaths in Richmond VA. For a randomly selected day, find the probability that the number of homicide deaths is 1.
Use the Poisson Distribution the indicated probabilities in one year, there were 116 homicide deaths in Richmond VA. For a randomly selected day, find the probability that the number of homicide deaths is zero.
Use the Poisson distribution to find the indicated probabilities. Currently, 11 babies are born in the village of West point, population of 760, each year. Find the probability that on a given day, there is at least one birth.
Please answer true or false and give reason why. 7. P (-0.5 < Z < -0.3) = 0.0736. 8. For normally distributed I.Q.'s with mean of 100 and standard deviation of 16, the probability that 25 randomly selected individuals have an average I.Q. less than 95 is 0.0594. 9. The standard error of a sampling distribution of means
1. Give a variable that could be used to stratify the population for each of the following studies. List at least four subcategories for each variable. a. A political party wants to conduct a poll prior to an election for the office of U.S. senator in Minnesota b. A soft drink company wants to take a sample of soft drink purc
2. Every time a machine breaks down at the Savannah Manufacturing Co. either 1, 2, or 3 hours is required to fix it, according to the following probability distribution: Repair Time (Hours) Probability 1 .30 2
1. The Savannah Manufacturing Co. produces a product for the shipping industry that uses 5 machines. The probability distribution of the number of machines that will break down in a week is as follows: Machine Breakdowns per Week Probability 0
3. The concessions manager at the Clemson vs. USC football game must decide whether to have the vendors sell sun visors or umbrellas. There is a 30% chance of rain, a 15% chance of overcast skies, and a 55% chance of sunshine, according to weather forecasts for the Columbia SC on game day. The manager estimates that the followi
Calculate the probability of a Type II error for the following test of hypothesis, given that µ = 203 H0 = µ = 200 H1 = µ != 200 significance = .05 standard deviation = 10 n= 100
Suppose that we have two normal populations with the means and standard deviations listed here. If random samples of size 25 are drawn from each population, what is the probability that the mean of sample 1 is greater than the mean of sample 2? Population 1: mean = 40 and SD = 6 Population 2: mean = 38 and SD = 8
The manager of a restaurant believes that waiters and waitresses who introduce themselves by telling customers their names will get larger tips than those who don't. In fact, she claims that the average tip for the former group is 18%, whereas that of the later is 15%. If tips are normally distributed with a standard deviation
The red lobster restaurant chain regularly surveys its customers. On the basis of these surveys, the management of the chain claims that 75% of its customers rate the food as excellent. A consumer testing service wants to examine the claim by asking 460 customers to rate the food. What is the probability that less than 70% ra
The restaurant in a large commercial building provides coffee for the building's occupants. The restaurateur has determined that the mean number of cups of coffee consumed in a day by all the occupants is 2.0 with a standard deviation of .6. A new tenant of the building intends to have a total of 125 new employees. What is the
The heights of north American women are normally distributed with a mean of 64 inches and a standard deviation of 2 inches. a) What is the probability that a randomly selected woman is taller than 66 inches? b) A random sample of four women is selected. What is the probability that the sample mean height is greater than 66
The question file is attached.
Assume the probability of the birth of a boy is 0.5. ... [See the attached question fle.]
A recent survey indicated that 82% of single women aged 25 years old will be married in their lifetime. Using binomial distribution find the probability that 2 or 3 women in a sample of 20 will never be married.
An industrial chemical to retard the spread of fire in paint has been developed. From past experience, 48% of sales calls will result in an order. a) What is the probability that the first order will come on the fourth sales calls of the day? b) If eight sales calls are mad in a day, what is the probability of receiving ex
A production process manufacturers alternators. On the average, 1% of the alternators will not perform properly when tested in the plant. When a large shipment of alternators is received at the plant, 100 are tested, and, if more that 2 are defective, the shipment is returned to the manufacturer. What is the probability of retur
Axline Computers manufactures personal computers at 2 plants. The Texas plant has 40 employees, the Hawaii plant has 20. A random sample of 10 employees is to be asked to fill out benefit questionnaires. A. What is the probability that none of the employees in the sample work at the plant in Hawaii? B. What is the probab
According to a survey of American households, the probability that the residents own 2 cars if annual household income is over $25,000 is 80%. Of the households surveyed, 60% had incomes over $25,000 and 70% had 2 cars. The probability that the residents of a household own 2 cars and have an income over $35,000 a year is. a.
A study found that on a given day 76% of women and 46% of men made their beds. in the U.S. women comprise 51% of adults. Find the following: a) the percentage of all adults who are men and made their beds. b) the percentage of all adults who are women and made their beds c) the percentage of all adults who make their beds
A random variable has probability density function defined by f(x) = k x / ( 5x^2 + 1 )^(3/2) on the interval [ 0 , sqrt(3) ]. Find the value of k and then the probability that sqrt (8/5) ≤ x ≤ sqrt(3).
1. A small business owner is experiencing a high staff turnover and wants to design a study to investigate the problem. Please identify following elements of this research study. a. Research problem b. Research design c. Hypothesis to be tested d. Data collection methods e. Unit of analysis. 2. Sara scored 75 in a sta
Please see the attached file. 1. An article in USA Today stated that "Internal surveys paid for by directory assistance providers show that even the most accurate companies give out wrong numbers 15% of the time." Assume that you are testing such a provider by making 10 requests and also assume that the provider gives the wro
3. The number of cars arriving at Joe Kelly's oil change and tune-up place during the last 200 hours of operation is observed to be the following: # of Cars Frequency 3 0 4 10 5 30 6 70 7 50 8 40 9
2. The local operations manager for the IRS must decide whether to hire 1, 2, or 3 temporary workers. He estimates that net revenues will vary with how well taxpayers comply with the new tax code. # of Workers Low Compliance Medium Compliance High Compliance 1 50 50 50 2 100 60 20 3 150 70 -10 a. If he
A player rolls two dice. The player receives $1 for each dot on the face of two dice. For example, he will be paid $9 if the face of the dice show a 4 and a five. let X= the number of dollars won each game. a) is X a discrete or continuous random variable? b) Show the probability distribution of X. c) Find the expected val
A packaging company distributes quarter-pound beef patties to local fast-food restaurants. The restaurants demand the weights to be 4 plus or minus .02 ounces. If the patties are too small the customers will complain, if there will be too few of them in each box and the company will loose money. if the standard deviation of the
A craftsperson makes stuffed animals for sale. 85% of the animals she makes are bears while the remaining 15% are rabbits. Suppose she sells 75% of her bears at craft shows but only 50% of her rabbits are sold at craft shows. What proportion of her animals does she sell at craft shows? Make a tree Diagram.