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Raw materials are studied for contamination. Suppose that the number of particles of contamination per pound of material is a Poisson random variable with a mean of 0.01 particle per pound.
a) What is the expected number of pounds of material required to obtain 15 particles of contamination?
b) What is the standard deviation of the pounds of materials required to obtain 15 particles of contamination?
when determining the sample size needed to achieve a particular error estimate you need to know sigma. what are two
The local operations manager for the IRS must decide whether to hire 1, 2, or 3 temporary workers. He estimates that net revenues will vary with how well taxpayers comply with the new tax code.
Given that 30% of US adults are smokers, find the average of the random variable X= # of smokers in a random sample of 50 residents of the USA, also find the variance and standard deviation of X.
A population consists of ten items, six of which are defective. In a sample of three items, what is the probability that exactly two are defective?
In the study of fingerprints, an important quantitative characteristic is the total ridge count for the 10 fingers of the individual.
What is the probability that a consumer selected at random purchased the same number or more products than before?
out of a total of 10 college textbooks estimate the standard deviation of their ages if the oldest textbook is known
Perform a hypothesis test to determine if there is a significant correlation (α =0.05) between number of hours of overtime worked and hours of sleep
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Fuji Importers' tubes are 4 percent defective, Kirkpatricks' 7 percent, and Parts, Inc. are 6.5 percent defective. (a) What is the overall percent defective?
The germination success rate for begonia seeds is 60%. In a package of 200 seeds,
Using the probability formulas, find the proportion of employees who either have MBAs or are managers.
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