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A manufacturer can typically process 176-264 devices a given period of concern. In this situation the processing event is either pass or fail. There is apriori info that on any given set of ~20 devices approx 1device is likely to fail( i.e. binomial w/ .95 prob of success). It is desired that the process should have a process reliability of .995 (which allows approx 3 out of 176 to fail.) If we want to have a confidence level of 90% for a .995 process reliability what is the necessary sample size to achieve this.. given the .95 prob of success for a typical batch of 20 devices? What is the preferred method of approach?
Compute the range, variance, standard deviation, and coefficient of variation. Compute the Z scores. Are there any outliers?
Classify the following as an example of nominal, ordinal, interval, or ratio level of measurement, and state why it represents this level: Gender of employees at a local warehouse.
It could not do anything with the airport and suffer a loss of revenue. The current value of raised revenue from a new airport is in question.
In November 2009, 65% (0.65) of Americans favored the death penalty for a person convicted of murder. In November 2010, 1025 adult Americans were asked by the Gallup organization,
Test the claim about population mean, u, at given level of significance using given sample statistics. Find out critical value(s).
Is there evidence to suggest a difference in the mean waiting times at the four body shops?
A large internet retailer, is studying the lead time (elapsed time between when an order is placed and when it is filled) for a sample of recent orders. The lead times are reported in days.
If the doctor wants to use height to predict head circumference run a linear regression on the data. Find the r-value and comment about it.
Suppose local monthly cell phone bills are normally distributed with a standard deviation $12. What is the probability that a randomly selected cell phone bill is between $30 and $55?
A meat processing plant has processed an average of 100 tons per day for the last several years. Newer processing machines have been installed recently.
Introduce some basic library search tools and demonstrate the relevance of statistics (in this case, regression analysis) to your chosen field of study. MS 3043 - Spring 2014 Project
Does this mean immigrants tend to earn more than other people? Or does it mean immigrants improve a state's economy? If not, what could explain the correlation?
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