Concept explainers
Absentee rates at a jeans plant. A plant that manufactures denim jeans in the United Kingdom introduced a computerized automated handling system. The new system delivers garments to the assembly line operators by means of an overhead conveyor. Although the automated system minimizes operator handling time, it inhibits operators from working ahead and taking breaks from their machine. A study in New Technology, Work, and Employment (July 2001) investigated the impact of the new handling system on worker absentee rates at the jeans plant. One theory is that the
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Statistics for Business and Economics (13th Edition)
- Size of a firm matters for implementation of supply chain management practices. It implies that larger firms very frequently implement supply chain and use advanced technologies to integrate supply chain partners. A study has reported part of the relationship between types of firm (Private and Public) and supply chain management implementation and between size of a firm (small to large, in terms of number of employees) and supply chain management implementation in International Journal of Business Modelling and Supply Chain Management (Vol. 5, 2013). The following table shows number of different sized private and public firms participated in this study Private Public Total ≤ 24 employees 20 1 21 25-49 17 1 18 50-99 14 1 15 100-199 9 0 9 ≥ 200 employees 23 9 32 Total 83 12 95 Two following events are defined: A: {A firm participated in this study is Private} B: {A firm participated in this study has employees more than 49} Find a. P(A) and P(B) b. P(AUB) c. P(A∩B)arrow_forwardThe Lawson Fabric Mill Produces five different fabrics. Each fabric can be woven on one or more of the mill’s 36 looms. The sales department’s forecast of demand for the next month is shown in below Table 1, along with data on the selling price per yard, variable cost per yard, and purchase price per yard. The mill operates 24 hours a day and is scheduled for 30 days during the coming month. The mill has two types of looms: draw and regular. The draw looms are more versatile and can be used for all five fabrics. The regular looms can produce only three of the fabrics. The mill has a total of 36 looms: 8 are draw and 28 are regular. The rate of production for each fabric on each type of loom is given in below Table 2. The time required to change over from producing one fabric to another is negligible and does not have to be considered. The Lawson Fabric Mill satisfies all demand with either its own fabric or fabric purchased from another mill. Fabrics that cannot be woven at the…arrow_forwardA manager of a large supermarket chain wants to predict the demand of the best-selling SKU of the Coke product family, namely the 16 oz 24-can case. The manager thinks that the demand of Coke may be related to its price, the national advertisement expenditure level of Coke, and the price of the 16 oz 24-can case Pepsi Cola. Based on a sample of 20 weeks of data of quantity sold (in cases) for the Coke Cola, price of Coke Cola (in dollars), Coke's advertisement expenditure (in million dollars), and the price of Pepsi Cola (in dollars), a multiple linear regression analysis was performed in Excel. A part of the output of the regression analysis is given below: SUMMARY OUTPUT Regression Statistics Multiple R R Square Adjusted R Square Standard Error Observations ANOVA Regression Residual Total Intercept Price of Coke Ad Expenditure Price of Pepsi 0.70955 0.503461 0.410359 2.130054 20 Df 3 16 19 Coefficients 48.63081 -0.3035 0.342937 0.23406 SS 73.60593 72.59407 146.2 Standard Error…arrow_forward
- Pursuing an MBA is a major personal investment. Tuition and expenses associated with business school programs are costly, but the high costs come with hopes of career advancement and high salaries. A prospective MBA student would like to examine the factors that impact starting salary upon graduation and decides to develop a model that uses program per-year tuition as a predictor of starting salary. Data were collected for 37 full-time MBA programs offered at private universities. The data are stored in the accompanying table. Complete parts (a) through (c) below. a. Construct a 95% confidence interval estimate of the mean starting salary upon graduation of an individual program with per-year tuition cost of $50,050. b. Construct a 95% prediction interval of the starting salary upon graduation of an individual program with per-year tuition cost of $50,050.arrow_forwardPursuing an MBA is a major personal investment. Tuition and expenses associated with business school programs are costly, but the high costs come with hopes of career advancement and high salaries. A prospective MBA student would like to examine the factors that impact starting salary upon graduation and decides to develop a model that uses program per-year tuition as a predictor of starting salary. Data were collected for 37 full-time MBA programs offered at private universities. The data are stored in the accompanying table. Complete parts (a) through (e) below. E Click the icon to view the data on program per-year tuition and mean starting salary. a. Construct a scatter plot. Choose the correct graph below. O A. OB. Oc. OD. 80,000- 200,000- 80,000- 200,000- 0- 0- 200,000 Starting Salary (S) 80,000 Tuilion ($) 200,000 Starting Salary (S) 80,000 Tuilion (S) b. Assuming a linear relationship, use the least-squares method to determine the regression coefficients b, and b,. bo =0 b, =0…arrow_forwardA 1 Program Per-Year Tuition ($) 62486 68484 67888 HN34567000 2 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 67050 67792 66183 66648 69860 64013 63704 66855 62839 60049 57895 55895 53947 54645 53374 52975 49195 44629 47459 48355 47415 38386 48726 48050 51251 37376 32404 44246 40984 49238 33366 23635 41729 38862 B Mean Starting Salary Upon Graduation ($) 155737 154423 149313 143503 140925 153696 147799 149794 134756 147521 142518 143619 141792 138082 125249 114639 127846 127392 130064 123958 115916 111221 110846 106083 79315 79529 103321 74754 86946 72656 76078 53979 63709 102611 53719 81335 51657 U D E F Garrow_forward
- Pursuing an MBA is a major personal investment. Tuition and expenses associated with business school programs are costly, but the high costs come with hopes of career advancement and high salaries. A prospective MBA student would like to examine the factors that impact starting salary upon graduation and decides to develop a model that uses program per-year tuition as a predictor of starting salary. Data were collected for 37 full-time MBA programs offered at private universities. The data are stored in the accompanying table. Complete parts (a) through (e) below. Click the icon to view the data on program per year tution and mean starting salary a. Construct a scatter plot. Choose the correct graph below. 200,000- OB 200,000- 0- OC. 80,000 ○ D. 80,000- 80,000 200,000 200,000 Starting Salary ($) Starting Salary ($) 80,000 Tuition ($) b. Assuming a linear relationship, use the least-squares method to determine the regression coefficients by and by Tuition ($) by= (Round the value of by…arrow_forwardNEED ASAP!!! I'll rate positive for sure...arrow_forwardBriley Cosmetics Inc. Briley Cosmetics manufactures and distributes a wide range of skin care products. A recent order has arrived for 10,000 cartons of face cream, 5,000 cases of body cream, and 15,000 cases of hand cream. The manufacturing process consists of a two-stage procedure that uses two types of raw materials (A and B). Briley's monthly production capacity (first shift) is 15,000 labor-hours for stage 1 and 10,000 for stage 2. The first shift hourly rates are $8.50 for stage 1 and $9.25 for stage 2. A second shift is available with a 10% reduction in capacity and a 10% increase in wage rates. The cost for raw materials is $1/pound for Type A and $1.50/pound for Type B. The manufacturing facility has available for the next production run 200,000 pounds of Type A and 150,000 pound of Type B. The following table summarizes the resource requirements to produce each product. Face Body Cream Hand Cream Cream Labor (hr/carton) Stage 1 Stage 2 Raw Materials 1.5 1.8 1.0 0.8 1.0 0.5…arrow_forward
- Adelie Enterprises is exploring a new service to provide weekly delivery of grocery items to homes in the greater Greenwood area. The company's customers place web-based orders and Adelie's team assembles and delivers the orders in specially designed cardboard boxes. Management, interested in locating a supplier that can provide boxes cheaply and efficiently, has discovered that each potential supplier's ability to satisfy the company's requirements is influenced by the level of demand. Table 1 provides Adelie's vendor solection criteria, criterion weights, and rankings (1-10 with 10 being the highest) under the assumption that low, medium or high demand is generated for their service. m Click the icon to view Table 1. a. Which supplier should be selected if there is low demand for Adelie's new service; which supplier should be selected under moderate demand assumptions; under high demand? Fil in the table below. (Enter your responses rounded to two decimal places.). Selected supplier…arrow_forwardYou are analyzing the number of bird species found in each county of Massachusetts. You have one observation per county, corresponding to the total number of species observed there during the Christmas Bird Count (a national bird count organized mainly by volunteers every year on Christmas). Your predictor variables are: population, percent forested habitat, number of highways that cross the county. What kind of model do you use to analyze these data? For the above model, you think there may be a non-linear effect of forest habitat based on the number of highways that cross the county, as this may cause the habitat to be more fragmented. You do not think there are any other non-linear effects. Assume "county" is a variable for which county the data comes from Assume "highways" is the number of highways in the county Assume "forest" is the percent of forested habitat Assume "population" is the population of the county Group of answer choices # species ~ county + highways *…arrow_forwardWhat is the defining characteristic of a linear model?arrow_forward
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