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Mean shifts on a production line. Six Sigma is a comprehensive approach to quality goal setting that involves statistics. An article in Aircraft Engineering and Aerospace Technology (Vol. 76, No. 6, 2004) demonstrated the use of the normal distribution in Six Sigma goal setting at Motorola Corporation. Motorola discovered that the average defect rate for parts produced on an assembly line varies from run to run, and is approximately normally distributed with a mean equal to 3 defects per million.
Assume that the goal at Motorola is for the average defect rate to vary no more than 1.5 standard deviations above or below the mean of 3. How likely is it that the goal will be met?
Given the Life expectancy data for the countries of the E.U., can we conclude that the mean Life Expectancy in the U.S. is greater than the mean Life expectancy in the E.U.?
The sample mean and standard deviation were determined to be 1511.4 pages and 35.7 pages, respectively. The historical average lifetime for cartridges produced by the current process is 1502.5 pages. At α = .05, test the claim that the new cartridge ..
List the eight phases of development of a canal system. Discuss the possible costs incurred by the canal owner, the canal users (shippers), and the surrounding community at each phase of developing this engineering system.
A shape is randomly selected from the following quadrilaterals: parallelogram, rhombus, rectangle, square, and trapezoid. What is the probability that it has four right angles, given that it has four congruent sides?
Westward expansion during 1860-1890. What is a good topic to star with for an essay?
find the probability density function for the t-distribution with 1 degree of freedom. hint in math 380 you calculated
suppose that the logons to a computer network follow a poisson process with an average of 3 counts per minute.a what is
Determine the lowest weight a student can have and still be qualified to enter the school.
suppose that a group of 1000 orange trees is laid out in 50 rows of 20 trees each. to determine the sugar content of
suppose you know that the distribution of sample proportions of the residents of one town over 70 years old in samples
in studying the occurence of genetic characteristics the following sample data were obtained. at the 0.05 significance
The following data are the lifetimes (in hours) of 20 certain electrical components: Find a point estimate and 90% confidence interval for the population lower quartile.
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