67. The following data show that trailing 52 week primary share earnings and books values as reported by 10 companies(the wall Street Journal, March 13/2000). Company -Earnings-Book Value Am Elec -25.21 -2.69 Columbia En -23.20 -3.01 Con Ed -25.19 -3.13 Duk
A seven year old study reported that women whose mothers used the drug DES during pregnancy were twice as likely to develop tissue abnormalities that might lead to cancer as women whose mothers did not take the the drug. a. This study involved the comparison of two populations. What were the populations? b. Do you suppose
Please see the attached file for the fully formatted problems. A. 100 lengths of steel bar were measured and their lengths In centimetres (cm) are given in the table labelled Item 36 on your worksheet. i) Plot a histogram of the data provided. ii) Calculate forthe data: a) The arithmetic mean length. (Show all working). b
A ball bounces 1/2 its height each bounce. It is dropped from a height of one foot. a) How many times does it bounce? b) How far does it bounce? c)How long does it bounce? Does it ever come to rest? (Please show work)
How high will the fourth ball bounce if a stack of 4 balls is dropped from a height of 5 feet? Assume the usual perfectly resilient balls and large mass ratios.
The number of "near misses" recorded for the last 20 months at the Lima Intl Airport is 3,2,3,2,2,3,5,1,2,2,4,4,2,6,3,5,2,5,1, 3. Develop an appropriate control chart . Determine the mean number of misses per month and the limits on the number of misses per month. Show all your work/calculations . Are their any months where
Only for above listed OTA. Suppose women's heights have a mean of 63.6 inches and a stan. dev. of 2.5 inches. Women basketball players must be in top 60% of heights to be eligible for WNBA. Find the height that separates the top 60% from the bottom 40%.
Only for above listed OTAs Pregnancies: normally 268 days is the mean and a stan.dev. of 15 days. If we say a baby is premature if born at least 3 weeks early, what % are born prematurely?????
GM engineers want to estimate mean driver response time to a new break light standard Deviation with the symbol Q upsidedown is known to be .15. fifty drivers have a mean response time of .72. find a 90% confidence interval.
Subject: How do I present an explaination of this data Details: I am suppose to present a half page Explaination of the data collected, by using statistical expressions. Survey for Statistics: 1. Age ____________ 2. Height ____________ 3. Weight ____________ 4. Favorite Activity ____________ 5.
Rent Resident: Amount of monthly profit from residential rent homes There is a data file attached. Rent Commercial: Amount of monthly profit from rent paid on commercial buildings. A realtor owns numerous residential and commercial buildings and collects rent on these properties. The realtor selects 100 months over t
Please see the attached file for full problem description. --- A scientist studying babies born prematurely would like to obtain an estimate for the mean birth weight, , of babies born during the th week of the gestation period. She plans to select a random sample of birth weights of such babies and use the mean of the sam
Four symmetrical distributions, labeled (a), (b), (c), and (d), are represented below by their histograms. Without performing any calculations, order the respective standards deviations σ_a, σ_b ,σ_c , and σ_d of the distributions. A X X X X X X X X
Four distributions, labeled (a), (b), (c), and (d), are represented below by their histograms. Without performing any calculations, order the respective means , , , and of the distributions. A X X X X X X X X X 1 2
I need to verify my work and need help with work on Exercises 4, 5, 6, 7 from attached PDF file and Excel file. Please help soon. Please find the attached zip file for all the related files. 4. The Big Bang Novelty Company makes three basic types of noise-makers: Toot, Wheet, and Honk. A Toot can be made in 30 minutes and has
I need to verify my work and need help with work on Exercises 1, 2, 3 from attached PDF file and Excel file. Please help soon. Please find the attached zip file for all the related files. 1. A manager of a firm's research and development is currently reviewing a set of proposals prepared by her staff. She must soon decide w
Describe how the mean compares to the median for a distribution as follows: a. skewed to the left, b. skewed to the right, c. symmetric
Using a class number of 8, a highest value of 259, and a lowest value of 125, find the class width.
What is the midpoint of the class 25.5-38.5?
At the time Beth was hired as a server at a Restaurant, she was told she could average $20 a day in tips. Over the first 35 days she was employed at the restaurant, the mean daily amount of her tips was $24.85 with a standard deviation of $3.24. At the .01 significance level, can Beth conclude that she is earning an average of
The number of cartoons watched by first graders on Saturday mornings is shown below: x, P(x) 0, 0.2 1, 0.2 2, 0.3 3, 0.15 4, 0.1 5, 0.05 The mean of this distribution is a) 1.9 b) 2.6 c) 2.4 d) 3.1 e) None of the above
A). Find the mean IQ scores for girls and for boys. It is common for boys to have somewhat higher scores on standardized tests. It that true? b). Compute 95% T intervals of the Girls' IQ's and the Boys' IQ's and explain what these intervals mean. c). Make a histogram for each set of data to determine whether each distribu
Is it accurate to conclude that John is twice as motivated as Cindy? Is it accurate to conclude that John is twice as motivated as Cindy? Is it accurate to conclude that, because of her score of 0, Linda totally lacks motivation? Suppose that on item #27, Matthew had circled a rating of 5. What are the real upper and lower limits of this measurement? Would a person's total motivation score - figured by adding up the numbers they circled for each item, be considered a discrete or a continuous variable? How could one measure motivation with a continuous variable?
The amount of motivation of an individual was measured by a self report scale that has 32 items each scaled as shown below: 0........1........2........3.......4..........5.........6...........7 never hardly ever sometimes very often The following scores were obtained: Mishelle 192, Justin 128, Matthe
East value Distributors distributes industrial valves and control devices. The Eastern Valve Co. Has an annual demand of 20000 units and cost of $90 per unit. The cost of ordering is $100 per order and inventory-carrying cost is estimated to be 5 percent of the cost of each value. Lead-time is four working days. Determine(a
Under what conditions could trigger strategies be used by these firms to support the collusive level of advertising? Identify the costs that are relevant for your decision, and then determine whether Gear Net should produce 250 hubs or 500 hubs.
15. At a time when demand for ready-to-eat cereal was stagnant, a spokesperson for the cereal maker Kellogg's was quoted as saying, "... for the past several years, our individual company growth has come out of the other fellow's hide." Kellogg's has been producing cereal since 1906 and continues to implement strategies that ma
Integer goal programming model : a. Please describe several economic or "hard" constraints that you would include in your model. b.Please describe several goal or "soft" constraints that you would include in your model. c.Please describe how you would prioritize and/or relative weight the goals you have described in b.
You have now become an expert in the use of goal and integer programming. Consider now how you would creatively apply an integer goal programming model to this problem setting. You are asked here to provide a conceptual or written formulation rather than a mathematical formulation. a. Please describe several economic or "har
Suppose that a survey of 100 individuals who live in the western region of New York was conducted. The party affiliation (Democrat, Independent, Republican) of each individual surveyed was recorded, as well as their response to the following three questions: Questions of Study 1. Should legislative pay be cut for every day
The lengths of adult earthworms are normal with mean 8.6cm. and standard deviation 1.6cm. 40 adult earthworms are chosen at random. Approximate the probability that at lease 18 of them are less than 4.5cm.long.
I have an xbar of 1000 and an Sx of 103. I have a random sample of 30. I am trying to figure out if this is an adequate sample without knowing the total population in an office. Can you lead me to a useable equation?
Multi-question real estate linear programming problem. Complete with set-up, answer, limits and sensitivty report. Attachments in Excel and Word.
A real estate developer is planning to build an apartment building specifically for graduate students on a patch of land adjacent to Arapet College in Madrid, Arizona. Four types of units can be included in the building: efficiencies, and one-, two-, and three-bedroom units. Each efficiency requires 500 square feet; each one-be