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Three-dimensional (3D) printing is a manufacturing technology that allows the production of three-dimensional solid objects through a meticulous layering process performed by a 3D printer. 3D printing has rapidly become a time-saving and economical way to create a wide variety of products such as medical implants, furniture, tools, and even jewelry. The article "Process Capability Analysis of Cost Effective Rapid Casting Solution Based on Three Dimensional Printing" (MIT Intl. J. Mech. Engr., 2012: 31-38) considered the production process of metal castings by using a 3D printer. Data was collected on 16 batches (each having two castings), where the outer diameter of each casting (in mm) was recorded. The target diameter of each casting was 60 mm. The resulting data is given here:
Apply the supplemental rules suggested in the text to the data. Are there any out-of-control signals?
Use the contingency table you constructed in Module 2 to determine if there is evidence of a significant difference between proportions of males and females who enjoy shopping for clothing at the 0.01 level of significance.
Using the .05 level, what should the experimenter conclude? (a) Use the steps of hypothesis testing, (b) sketch the distributions involved.
Using any linear programming software, solve the problem for the optimal answer and provide the value of the objective function and the variables at optimality. Provide a copy of your linear programming output. In addition to providing this output..
To estimate the average time it takes to assemble a certain computer component, the industrial engineer at an electronic firm timed 40 technicians in the performance of this task, getting a mean of 12.73 minutes and a standard deviation of 2.06 mi..
find two values of the normal random variable with mean 73 and standard deviation 8 lying symmetrically on either side
Use a Normal approximation to find the probability that 75% or more of the women in the sample have been on a diet.
Among Americans who are auto racing fans, 59% identify NASCAR as their favorite type of racing. What is the probability that all four have NASCAR as their favorite?
The random sample population is 500 people who shop for workout programs and equipment. The sample mean of those shopping is that they spend an average of $250.00 per purchase and perchance at least 2 to 3 items for working out and weight lost
suppose 80 of the college football fans root for the home team. if 400 fans who attended a college football game last
How could the Central Limit Theorem apply in making a business decision? Try to provide an example from your current or future career.
Draw a histogram of EMXP. Does EMXP have an approximately normal distribution? Does it have an obvious skew (left or right) and any obvious outliers? If an analysis requires that EMXP have a normal distribution, do you think that your results will..
If random samples, each with n = 9 scores, are selected from a normal population with µ = 80 and σ = 36, then what is the expected value for the distribution of sample means?
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