Administrators at a university are planning to offer a summer seminar. It costs $3000 to reserve a room, hire an instructor, and bring in the equipment. Assume it costs $25 per student for the administrators to provide the course materials. If we know that 20 people will attend, what price should be charged per person to break e
Please see the attached file. You already have the trendline and you need to predict the sales for 2006. Show your work in an Excel spreadsheet.Please show all work in the excel spreadsheet attached.Also please show the trendline.
Suppose the population mean is 50.6 pounds with a population standard deviation of 1.62 pounds. Suppose we take thousands of samples with a sample size of 5. What will the mean of these sample means be? What will the standard deviation of the sample means be?
What do we mean when we mention ordinal level scales vs. interval level scales? Can we contrast the two differences?
During the "Spring Fling", the bumper car amusement attraction has a problem of cars becoming disabled and in need of repair. Repair personnel can be hired at the rate of $20 per hour, but they only work as one team. Thus, if one person is hired, s/he works alone whereas two or three people would work together on the same broken car.
During the "Spring Fling", the bumper car amusement attraction has a problem of cars becoming disabled and in need of repair. Repair personnel can be hired at the rate of $20 per hour, but they only work as one team. Thus, if one person is hired, s/he works alone whereas two or three people would work together on the same broken
A store (open 24 hours a day, every day) sells 8-roll packs of paper towels, at the rate of approximately 420 packs per week. Because the towels are so bulky, the annual cost to carry them in inventory is estimated at $.50 per 8-roll pack. The cost to place an order is $20. It takes four days for an order to arrive. Currently, S
A company distributes a printed guide for the approximate 22,000 visitors it has each year. Holding costs for the brochures are 10% of purchase cost - and it costs $30 to place an order with the printer (unless you order the largest discount category in which case the order cost drops to $25). . The printer has a discounted p
The Executive Camera Company provides full expenses for its sales force. When attempting to budget automobile expenses for its employees, the financial department uses mileage figures to estimate gas, tire, and repair expenses. Distances driven average 5,650 miles a month, and have a standard deviation of 120. The financial depa
Women in the U.S. Air Force have hands that are 6.9 inches on the average (from the tip of the middle finger to the heel of the hand). The standard deviation is 0.34 inches. Assume that hand length is normally distributed. (10 points) a. What proportion has hands longer than 7 inches? b. What proportion would have hands sh
A random sample of 10 miniature Tootsie Rolls was taken from a bag. Each piece was weighed on a very accurate scale. The results in grams were: 3.087 3.131 3.241 3.241 3.270 3.353 3.400 3.411 3.437 3.477 (a) Construct a 90 percent confidence interval for the true mean weight. (b) What sample size would be necessary to esti
A large sporting goods store is placing an order for bicycles with its supplier. Four models can be ordered: the adult Open Trail, the adult Cityscape, the girl's Sea Sprite, and the boy's Trail Blazer. It is assumed that every bike ordered will be sold, and their profits, respectively, are 30, 25, 22, and 20. The LP model shoul
The management of White Industries is considering a new method of assembling its golf cart. The present method requires 42.3 minutes, on the average, to assemble a cart. The mean assembly time for a random sample of 24 carts, using the new method, was 40.6 minutes, and the standard deviation of the sample was 2.7 minutes. Using the .10 level of significance, can we conclude that the assembly time using the new method is faster?
The management of White Industries is considering a new method of assembling its golf cart. The present method requires 42.3 minutes, on the average, to assemble a cart. The mean assembly time for a random sample of 24 carts, using the new method, was 40.6 minutes, and the standard deviation of the sample was 2.7 minutes. Using
T distribution and confidence intervals - The American Sugar Producers Association wants to estimate the mean yearly sugar consumption. A sample of 16 people reveals the mean yearly consumption to be 60 pounds with a standard deviation of 20 pounds.
The American Sugar Producers Association wants to estimate the mean yearly sugar consumption. A sample of 16 people reveals the mean yearly consumption to be 60 pounds with a standard deviation of 20 pounds. a. What is the value of the population mean? What is the best estimate of this value? b. Explain why we need to use the
A team of introductory statistics students (with too much free time) when to Marsh and recorded the calories and fat for various kinds of soup. Write a succinct summary of the central tendency, ...
A team of introductory statistics students (with too much free time) when to Marsh and recorded the calories and fat for various kinds of soup. Write a succinct summary of the central tendency, dispersion, and shape of the data. [See the attached Data File.]
Listed on the MEGASTAT attachment is the average daily circulation for the 50 U. S. newspapers with the largest circulation. Please show all work/outputs. a. Find the mean, median, Q1, and Q3. b. Find the 15th and the 90th percentiles. c. Find the coefficient of skewness and interpret the result. d. Develop a box plot a
The cost of one serving of peanut butter (in cents) for a random sample of 19 jars of peanut butter was found to be: 22 27 32 26 26 19 16 26 14 21 20 21 20 17 12 32 17 9 16 a) Give the five-number summary (low, Q1, median, Q3, high) b) Calculate the IQR.
Please see the attachment. 12. Table 1. Results of a screening test for diabetes, using a cutoff point of 160 mg.dl. True Diagnosis Test result Diabetic Not Diabetic Total Positive 34 20 54 Negative 116 9,830 9,946 Total 150 9,850 10,000 The specificity of the screening test for diabetes is a. 0.3% b.
Considering all of the day to day activities you are engaged in at work and in your personal lives, write a 200 (or more) word paper that describes at least three (3) different statistical usages that you see regularly. For each, describe how the statistics enhance the understanding of an issue or problem for the reader. Finally
2. What is the level of measurement for these items related to the newspaper business? (page 14) a. The number of papers sold each Sunday during 2004. b. The departments, such as editorial, advertising, sports, etc. c. A summary of the number of papers sold by county. d. The number of years with the paper for each employee
Cal and Becky have known each other since high school. Two years ago, they entered the same university, and today they are taking undergraduate courses in the business school. Both hope to graduate with degrees in finance. In an attempt to make extra money and to use some of the knowledge gained from their business courses, C
2. A math test was given with the following results: 80, 69, 92, 75, 88, 37, 98, 92, 90, 81, 32, 50, 59, 66, 67, 66 Find the range, standard deviation, and variance for the scores. 3. For a particular sample of 50 scores on a psychology exam, the following results were obtained. Mean = 78 Midrange = 72 Third quartile = 94
The average diameter of sand dollars on a certain island is 3.00 centimeters with a standard deviation of 0.70 centimeters. If 9 sand dollars are chosen at random for a collection, find the probability that the average diameter of those sand dollars is more than 2.790 centimeters. Assume that the variable is normally distribute
The average number of mosquitoes in a stagnant pond is 80 per square meter with a standard deviation of 8. If 16 square meters are chosen at random for a mosquito count, find the probability that the average of those counts is more than 81.6 mosquitoes per square meter. Assume that the variable is normally distributed.
For each of the following, indicate whether or not you would expect it to have a strong seasonal component and why. a. Sales of colorful wrapping paper, recorded monthly b. The number of air travelers to Hawaii from Chicago, recorded monthly c. The S&P 500 stock market index, recorded daily. Assume that the stock market is ef
Markland Manufacturing intends to increase capacity by overcoming a bottleneck operation by adding new equipment
Please answer the problem below and show the work-steps to how the answers were derived. ________________________________________________________________________ Markland Manufacturing intends to increase capacity by overcoming a bottleneck operation by adding new equipment. Two vendors have presented proposals. The fixed
A group of statistics students decided to conduct a survey at their university to find the average (mean) amount of time students spent studying per week.
19. A group of statistics students decided to conduct a survey at their university to find the average (mean) amount of time students spent studying per week. Assuming a standard deviation of 6 hours, what is the required sample size if the error is to be less than ½ hour with a 95% level of confidence? 20. A survey of
Please provide an answer to the problem below and make sure to show all the work as to how the answer was derived. ------------------------------------------------------------------------ Barbara Flynn is in charge of maintaining hospital supplies at General Hospital. During the past year, the mean lead time demand for b
This posting provides solution to determining queuing parameters (L,Lq,W,Wq,P0,P3,U) given single sever queuing system and first-come, first-served queue discipline.
I am having trouble with a question for queuing: A single-server queuing system with an infinite calling population and a first-come, first-served queue discipline has the following arrival and service rates: µ= 24 customers per hour λ; = 16 customers per hour Determine: L Lq W Wq P0 P3 U Please show i
Given the below activities which activities are on the critical path? What is the length of the critical path? Activity Immediate Predecessors Time (days) A - 3 B A 4 C
Minimize the following: Z=2A + 4B 4A+6B>=120 2A+6B>=72 B>=10