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VARIANCE OF BALL BEARINGS DIAMETER MEASUREMENTS
The random sample of 20 ball bearings diameters X1 , X2 ,... , X20 , pos- tulated in Example 13.4 as being from a Gaussian distribution with μ = 10, resulted in an average measured diameter of x¯ = 9.86 mm, and a standard deviation s = 1.01 mm. Now consider the case in which the design standard deviation for the manufacturing process is speci?ed as σ = 0.9; compute the probability that any sample standard deviation will equal or exceed the observed value of S = 1.01 mm if the manufac- turing process is still operating true to the original design speci?cations.
The following data are based on information from Domestic affairs. Let X be the average number of employees in a group helh insurance plan, and let Y be the average administrative cost as a percentage of claims.
a mens clothing store has ordered 36 shirts with various patterns. inventory records show 20 different styles of ties
To find out the prior probability, conditional probability and posterior probability. Calculate the posterior probability that the bid will be successful given a request for additional information.
an engineer is going to redesign an ejection seat for an airplane. the seat for an airplane. the seat was designed for
Suppose you roll a standard die 2000 times and let X be the sum of the values you get. Using the Central Limit Theorem, for what value of a is P[X >= a] approximately equal to P[N(0,1) >= 2] ?
you purchase a new motor vehicle and are considering purchasing an extended bumper-to-bumber warranty. the extended
Appalachian Coal mining believes it can enhance labor productivity and therefore net revenue by reducing air pollution in its mines. It estimates that the marginal cost function for reducing pollution by installing additional capital equipment is.
question1. if there are an odd number of data values in a set the median will be thea. value that appears the greatest
a committee of 2 is chosen at random from a population of 7 men and 8 women. what is the probability that the committee
What is the 95% confidence interval estimate for the average number of years served by all Supreme Court justices?
What is the response variable? Is this an experimental study or an observational study? Explain your answer in at most 25-30 words.
use n 6 and p 0.2 to complete parts a through c.a find the probabilities and construct a binomial probability
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