In an order placed at Gerdau, the customer requested some rolls of "25.4 kg Round Wire Rod", others of "26.99 kg Round Wire Rod" and also rolls of "25.4 kg Hexagonal Wire Rod" and "25.4 kg Hexagonal Wire Rod". 26.99 kg". It is known that 25% of rolls of "Round Wire Rod" are 26.99 kg and that, among rolls of 26.99 kg only, those of "Hexagonal Wire Rod" represent 25%. Also, 30% of the total number of rolls ordered is "Round Machine Wire of 25.4 kg". Choosing a roll at random, among all orders, the probability that it is a roll of "26.99 kg Hexagon Wire Machine" is approximately:

In an order placed at Gerdau, the customer requested some rolls of "25.4 kg Round Wire Rod", others of "26.99 kg Round Wire Rod" and also rolls of "25.4 kg Hexagonal Wire Rod" and "25.4 kg Hexagonal Wire Rod". 26.99 kg". It is known that 25% of rolls of "Round Wire Rod" are 26.99 kg and that, among rolls of 26.99 kg only, those of "Hexagonal Wire Rod" represent 25%. Also, 30% of the total number of rolls ordered is "Round Machine Wire of 25.4 kg". Choosing a roll at random, among all orders, the probability that it is a roll of "26.99 kg Hexagon Wire Machine" is approximately:

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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4) The percentage relative error is A) E, = 10 E, B) E, = 100 E, C) E, = E, D) E, = Ea
7,453,465 7,518,997 7,78& sed by 4.6% and total visitor days by 4.4% in thi increased slightly, from 11.6% to 12.6% of the to as the margin of error for total visitors is 7.5% ar ce: http://www.pc.gc.ca/eng/docs/bib-lib/docs5hi.aspxRE interval for total visitors in 2006.
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The control department of a light bulb manufacturer randomly picks 4400 light bulbs from the production lot every week. The records show that, when there is no malfunction, the defect rate in the manufacturing process (due to imperfections in the material used) is 1% . When 1.5% or more of the light bulbs in the sample of 4400 are defective, the control unit calls repair technicians for service. Answer the following. (If necessary, consult a list of formulas.) (a)Find the mean of p , where p is the proportion of defective light bulbs in a sample of 4400 when there is no malfunction. (b)Find the standard deviation of p . (c)Compute an approximation for P≥p0.015 , which is the probability that the service technicians will be called even though the system is functioning properly. Round your answer to four decimal places.
The control department of a light bulb manufacturer randomly picks 4400 light bulbs from the production lot every week. The records show that, when there is no malfunction, the defect rate in the manufacturing process (due to imperfections in the material used) is 1%. When 1.25% or more of the light bulbs in the sample of 4400 are defective, the control unit calls repair technicians for service. Answer the following. (If necessary, consult a list of formulas.) (a) Find the mean of p, wherep is the proportion of defective light bulbs in a sample of 4400 when there is no ? malfunction. (b) Find the standard deviation of p. (c) Compute an approximation for P(p 2 0.0125), which is the probability that the service technicians will be called even though the system is functioning properly. Round your answer to four decimal places.
2. According to World Health Organization (WHO), the recommended limit for a noise level inside a classroom is 35 dBA. However, nine out of ten schools fail to meet this recommendation. A researcher wishes to conduct a study relevant to the prior information, but as a gap, he decides to include the area (in square meters) of every classroom and how it could possibly affect the resulting noise level. He selects 17 classrooms at random, and the noise levels are recorded in the next slide. a. Find the regression equation and construct the scatter plot diagram. b. Predict the noise level if a classroom has an area of 85.97 m². c. Calculate the coefficient of determination and interpret the findings. d. Calculate the coefficient of alienation and interpret the findings.
An interdepartmental task force is being formed to investigate an increase in violent crimes. 1/5 of the task force will be police officers from the local precinct. 1/4 will be ATF agents, and the remaining 22 will be from the FBI. How many people are participating in the task force?
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18. The governor of New York has banned selling or purchasing "large" soft drinks, where a "large" is defined as being more than 16 oz. Sonic, famous for its Route 44 drinks is interested in estimating the proportion of New Yorkers that favor this ban. From a random survey of 800 New Yorkers, 375 answered no to the question, “Do you favor the governor's ban on 'large' soft drinks?" a. Find a 97.5% confidence interval for the proportion of New Yorkers who favor the ban on "large" soft drinks. b. Interpret the confidence interval. c. Can you conclude with 97.5% confidence that a majority of New Yorkers favor the ban on "large" soft drinks? Why or why not. d. Without doing any other calculations, can you be 99% confident that a majority of New Yorkers favor the ban on “large" soft drinks?
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Ims.jazanu.edu.sa/webapps'assessment/take/take.jsp?course_assessment_id=91958 18course id%3 101884 1&content_id= 804450 1&question_num_8.x%=. Statistics lislI a الوقت المتبقي: 1 ساعة، 25 دقاق، 49 ثانية )ثوان(. حالة اكتمال الأسلة » يقوم الانتقال إلى سؤال آخر بحفظ هذا الرد. 1 درجات السؤال 8 If the p-value is less than alpha in a one-tail test, what conclusion can you draw? The null hypothesis should not be rejected. A two-tail test should be used. Alpha should be changed The null hypothesis should be rejected. K > يقوم الانتقال إلى سؤال آخر بحلظ هذا الرد. A