Business Analytics (2nd Edition)
2nd Edition
ISBN: 9780321997821
Author: James R. Evans
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Question
Chapter 4, Problem 38PE
To determine
To develop control limits using data and draw conclusion.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
where's the spphomore?
Lichen has a high absorbance capacity for radiation fallout from nuclear accidents.
Since lichen is a major source for Alaskan caribou, and caribou is major food source tor the Alaskan
villagers, it is important to monitor the level of radioactivity in lichen.
Researcher at the University of Alaska, Fairbanks, collected 9 lichen specimens and measured the
amount in micro-curies per milliliter) of the radioactive element cesium-137 for each. Using the Minitab
software, it was found that the mean and standard deviation for the 9 observations were
X = 0.009027
аnd
s = 0.004854
A) Give a point estimate for the mean amount of cesium in lichen specimens collected in Alaska.
B) Give the t- value used in a small sample 95% confidence interval for the true mean amount of cesium
in Alaskan lichen specimens.
C) Form a 95% confidence interval for the true mean amount of cesium in Alaskan lichen specimens.
D) Give a practical interpretation for the interval you obtained in part C.
E) What…
the soil biogeochemistry in Californian salt marshes wished to explore how two of the most common plant species, pickleweed and pacific cordgrass, affected the accumulation of nitrogen in the soil. They measured the concentration of ammonium, a molecular form of organic nitrogen, in the soil, and measured or manipulated the density of pickleweed and cordgrass. Manipulations of ½ meter square plots (20 plots per manipulation) included removing all cordgrass (cordgrass removal), removing all pickleweed (pickleweed removal), or mixed (the control - nothing removed, thus mixed plots included a mixture of natural pickleweed and cordgrass). Boxplots of ammonium concentrations in each of the three manipulation treatments.
Letters indicate differences among means as determined by a Tukey posthoc test following
ANOVA. (b) Overall relationship between cordgrass stem density and soil ammonium content (includes data from all plot treatments). The solid black line and the gray shading represent the…
Chapter 4 Solutions
Business Analytics (2nd Edition)
Ch. 4 - Data obtained from a county auditor in the Excel...Ch. 4 - In the Excel file Facebook Survey, find the...Ch. 4 - For the Excel file Tablet Computer Sales, find the...Ch. 4 - Prob. 4PECh. 4 - Prob. 5PECh. 4 - Prob. 6PECh. 4 - Prob. 7PECh. 4 - Prob. 8PECh. 4 - Prob. 9PECh. 4 - Prob. 10PE
Ch. 4 - A marketing study of 800 adults in the 18—34 age...Ch. 4 - The Excel file EEO Employment Report shows the...Ch. 4 - In the Excell file Bicycle Inventory, find the...Ch. 4 - In the Sales Transactions database, find the...Ch. 4 - In the Excel file Economic Poll, find the...Ch. 4 - In the Excel file Facebook Survey, use a...Ch. 4 - In the Excel file Cell Phone Suivey, use...Ch. 4 - Using PivotTables, find the average and standard...Ch. 4 - Prob. 19PECh. 4 - Prob. 20PECh. 4 - Prob. 21PECh. 4 - Prob. 22PECh. 4 - Call centers have high turnover rates because of...Ch. 4 - In the Excel file Weddings, determine the...Ch. 4 - Prob. 25PECh. 4 - Prob. 26PECh. 4 - Prob. 27PECh. 4 - Prob. 28PECh. 4 - Prob. 29PECh. 4 - Prob. 30PECh. 4 - Prob. 31PECh. 4 - Compute the z-scores for the data in the Excel...Ch. 4 - Prob. 33PECh. 4 - Prob. 34PECh. 4 - Prob. 35PECh. 4 - Prob. 36PECh. 4 - Prob. 37PECh. 4 - Prob. 38PE
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Similar questions
- A restaurant forecasts 150 guests for a given period of time. The menu mix typically shows that 19% of guests order chicken skewers and 23% order rib-eye steak. Both are served with baked potato and steamed broccoli florets. The chicken breast, which needs to be trimmed and cut into cubes, has a 91% yield. Guests are served a 5 oz portion of the chicken (pre-cooked weight). The steak, on the other hand, comes in completely trimmed, portioned, and ready-to-cook. Broccoli is served as a 4 oz portion and has a 38% yield. Using this information, calculate how 159 many pounds of AP chicken breast and broccoli must be ordered. Also calculate how many units of steak and baked potato must be ordered to serve the guests during this time period. (None of these ingredients are used for any other dishes.)arrow_forwardIndustrial experiment Engineers at a computer produc-tion plant tested two methods for accuracy in drilling holes into a PC board. They tested how fast they couldset the drilling machine by running 10 boards at each oftwo different speeds. To assess the results, they measuredthe distance (in inches) from the center of a target on theboard to the center of the hole. The data and summarystatistics are shown in the table: Write a report summarizing the findings of the experi-ment. Include appropriate visual and verbal displays of the distributions, and make a recommendation to theengineers if they are most interested in the accuracy ofthe method.arrow_forwardA farmer has a 10-heactare maize farm. The maize is under “Fall Army Worm” attack. The farmer has to urgently control the attack using a chemical called AGENOX 221. Motorized sprayers with tank capacities of 15 litres each are to be used. The recommended concentration of the chemical is 2 ml/L and each full tank will cover ½ hectare. A 50-man team is engaged to control the attack. Using the above information and the assumptions given below: i. What volume of the chemical is required to cover the entire field to control the “Fall Army Worm” attack? ii. If each man covers an area of 25 meters square from one end of the field to the other, how many trips will each of them make to cover the entire field? Assume ach man moves in a straight line. Assumptions: 1. The 10 ha farm is considered to be a perfect square. 2. There is a 2.5 % loss of chemical due to the transfer to the sprayer tank.arrow_forward
- A lawn has an area of 200 square feet, and an infiltration capacity of 4 inches per hour. There are 12 inches in 1 foot. 6 inches of rain fall in one hour. I suggest making a sketch of the system to help visualize. 1. What is the volume of water, in feet cubed, that will run off the lawn from this event? 2. What is the volume of water, in feet cubed, that infiltrates from this event? Set up all calculations neatly; explain as you go. Be sure to use proper units and conversions. Circle final answers.arrow_forwardA campaign to promote a brand of dairy products is based on the free distribution of yogurts with lemon or strawberry flavor. It is decided to distribute at least 30,000 yogurts. Every lemon yogurt needs for its elaboration 0.5 gr. of a fermentation product and each strawberry yogurt needs 0.2 gr. of that same product. It has 9 kgs. of that product for fermentation. The cost of producing a yogurt of strawberry is twice that of a lemon yogurt. How many yogurts of each type must be produced so that the cost of the campaign is minimal?.arrow_forwardIn the process of producing engine valves, the valves are subjected to a first grind. Valves whose thicknesses are within the specification are ready for installation. Those valves whose thicknesses are above the specification are reground, while those whose thicknesses are below the specification are scrapped. Assume that after the first grind, 70% of the valves meet the specification, 20% are reground, and 10% are scrapped. Furthermore, assume that of those valves that are reground, 90% meet the specification, and 10% are scrapped. a) Find the probability that a valve is ground only once. b) Given that a valve is not reground, what is the probability that it is scrapped? c) Find the probability that a valve is scrapped. d) Given that a valve is scrapped, what is the probability that it was ground twice? e) Find the probability that the valve meets the specification (after either the first or second grind). f) Given that a valve meets the specification (after either the first or…arrow_forward
- In the process of producing engine valves, the valves are subjected to a first grind. Valves whose thicknesses are within the specification are ready for installation. Those valves whose thicknesses are above the specification are reground, while those whose thicknesses are below the specification are scrapped. Assume that after the first grind, 73% of the valves meet the specification, 21% are reground, and 6% are scrapped. Furthermore, assume that of those valves that are reground, 46% meet the specification, and 54% are scrapped. Given that a valve meets the specification, what is the probability that it was ground only once?arrow_forwardEvery ml of BCG vaccine contains greater than or equal to 4 million to less than or equal to 13 million colony forming units (CFU) upon reconstitution. Calculate the number of CFUS injected for the usual 0.1 ml intradermal dose recommended for infants under 3 months of age. 40,000,000-130,000,000 O 4,000,000-26,000,000 4,200,000-13,650,000 3,636,364-11,818,182 400,000-1,300,000arrow_forwardAmong its products is the power transducer. The product is an electrical isolation transducer of single-phase active and reactive power measurement, complete isolation between input and output signals. It is designed to measure power, reactive power and power factor. The product is widely used in electricity, communications, railways, industrial control and other fields. The transducer weights 0.7-pound, 1-500-volt, 0.5-700 A, the size is 76mmx32mmx2inch. The response time of the transducer is 250 ms. 1. What is the volume of the transducer in cubic m? 2. How many transducers can be packed in box of 1m X 0.5 m X 7m? 3. If the factory produces 500 transducer per hour, how many minutes are needed to produce 50 kg of the transducer? 4. If the production line needs maintenance every 100,000 transducer. Find to the nearest integer how many weeks are needed to be sent to maintenance if the production rate is 100 transducer/min which operates 8 hours/ day and 5 days / week.arrow_forward
- To investigate water quality, the Columbus Dispatch took water specimens at 16 Ohio State Park swimming areas in central Ohio. Those specimens were taken to laboratories and tested for E. coli, which are bacteria that can cause serious gastrointestinal problems. For reference, if a 100-milliliter specimen (about 3.3 ounces) of water contains more than 130 E. coli bacteria, it is considered unsafe. The E. coli levels per 100 milliliters found by the laboratories are presented in the table: 291.0 10.9 47.0 86.0 44.0 18.9 1.0 50.0 190.4 45.7 28.5 18.9 16.0 34.0 8.6 9.6 To access the complete data set, click the link for your preferred software format: Excel Minitab JMP SPSS TI R Mac-TXT PC-TXT CSV CrunchIt! Find the mean E. coli level. Mean E.coli level (rounded to two decimal places) per 100 mlarrow_forwardDetermine the soutions to the following system using multiple methodsarrow_forwardAn EWMA chart is used to monitor a temperature in a pharmaceutical process. An automated measurement is obtained selected every minute and added to the EWMA chart. Experience indicates that s = 0.5 °F. The process target (process mean when in control) is 72 °F. The EWMA uses a lamda value 2=0.35. If the accumulated value of the EWMA at the end of measurement 47 is Z47 = 72.165 and measurement 48 is equal to X4g = 72.466, what will be the accumulated value of the EWMA at the end of measurement 48, that is Z48 = ? 72.225 72.240 72.285 72.270 not enough information 72.255arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Algebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:Cengage
Algebra & Trigonometry with Analytic Geometry
Algebra
ISBN:9781133382119
Author:Swokowski
Publisher:Cengage
Introduction to Statistical Quality Control (SQC); Author: FORSEdu;https://www.youtube.com/watch?v=c18FKHUDZv8;License: Standard YouTube License, CC-BY
[DAXX] Introduction to Statistical Quality Control; Author: The Academician;https://www.youtube.com/watch?v=ypZGDxjSM60;License: Standard Youtube License