At a local manufacturing plant, employees must complete new machine setups within 30 minutes. New machine setup times can be described by a normal modelwith mean of 22 minutes and a standard deviation of four minutes. What percent of new machine setups take more than 30 minutes?OA. 52.28%OB. 2.28%O C. 47.72%O D. 97.72%O E. None of the above

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Answered: At a local manufacturing plant,…

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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Similar questions

Which of the following data sets has the smallest standard deviation? a. 1, 2, 3, 4, 5 b. 100, 100, 100, 100, 100 c. 100, 101, 102, 103, 104 d. 2, 4, 6, 8, 10
A company selling a new type of laptop battery advertises that it has a méan lifetime of 5 years. If you were in charge of quality control at the factory, which one of the following standard deviations of battery life spans would you prefer? 2 months. O 2 years O 5 years 27
The playing life of a Sunshine radio has a Normal distribution with a mean of 600 hours and a standard deviation of 100 hours. What percent of the time would you expect a radio to last between 400 and 700 hours?
Given a set of data that is skewed-right, there is at least _____ % of the data within 2 standard deviations.Fill in the blank with the best answer:
The life span of Duracell batteries is normally distributed. The mean life span is 10,502 hours an the standard deviation is 415 hours. If 66,500 duracell batteries are manufactured, approximately how many of those batteries last at least 9,850 hours? A 39,900 B. 46,600 C. 59,900 D. 62,600
The Human Development Report 2013, published by the United Nations, showed life expectancies by country. Values reported for some countries in Western Europe and values reported for some countries in Africa are available in the accompanying table. a. Which group (Western Europe or Africa) of life expectancies do you think has the larger standard deviation? Why? b. Find the standard deviation for each group. Compare them to illustrate that s is larger for the group that shows more variability from the mean. Click the icon to view the life expectancy data. X Life Expectancy Data a. Which group do you think has the larger standard devia European Country Austria O A. The Africa group should have the larger standard d O B. The Western Europe group should have the larger OC. The Western Europe group should have the larger O D. The Africa group should have the larger standard d Life Expectancy African Country 81 Angola Botswana 80 80 Belgium Denmark Finland France 81 83 81 standard deviation…
The weights of six-week-old poults (juvenile turkeys) are normally distributed with mean u = 9.1 pounds and standard deviation o = 2.4 pounds. Find the 20n percentile of the weights. Use Table A.2 as needed. Round your final answer to the nearest tenth. Do not round intermediate computations.
Find the range, vanance, and standard deviation for the given sample data. Include appropriate units in the results. Listed below are the measured radiation absorption rates (in Wikg) corresponding to various cell phone models. If one of each model is measured for radiation and the results are used to find the measures of variation, are the results typical of the population of cell phones that are in use? 1.16 0.82 0.51 0.69 1.11 0.82 0.69 0.75 0.52 0.53 1.34
A sample of 10 networking sites for a specific month has a mean of 26.1 and a standard deviation of 4.2. Which of these is the point estimator? a. 4.2 b. 1.83 c. 3.25
In a certain population, let us assume that high school scores are normally distributed with mean of 74 and standard deviation of 15. What is the 75th percentile? Select one: O a. 84.05 O b. 68.15 O c. 79.85 O d. 63.95
The incomes of trainees at a local mill are normally distributed with a mean of $1,100 and a standard deviation of $150. What percentage of trainees earn more than $1,300 a month? Group of answer choices 9.18% 40.82% 90.82% 35.31%

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