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In a shipment of 14 computer parts, 3 are faulty and the remaining 11 are in working order.
Three elements are randomly chosen out of the shipment. What is the probability that all three faulty elements will be the ones chosen?
the state education department requires local school districts to keep these records on all students age race or
byers and williams 1987 studied the impact of temperature the independent variable on the viscosity the response of
A set of n random variables X1, X2, X3,....,Xn, are independent and each uniformly distributed- Find the probability density function. - find the conditional PDF.-
Shade the bell curve, use the z-table to find the z-score that corresponds to 1% and convert the z-score back to the actual number.
an investigator hypothesizes that cholesterol levels in children migt be affected by educating their parents on proper
1. Let X represent the lifetime of a component in a piece of lab equipment, and suppose that X is exponentially distributed with a mean of µ = 1000 hours.
Comment on their success or failure to meet this goal.
a sample of 25 novels has a standard deviation of 9 pages. find the 95 confidence interval of the population standard
a professor at a loca community noted that the grades of hi s students were normally distrubuted with a mean of 74
Four students riding to school together offer a the excuse of a flat tire on their car for missing a test. On the makeup test, the professor asks the students to each identify the tire that went flat.
20% of teenagers in a small town say they like reading news online. Suppose you randomly select 7 teenagers from the town and ask them whether or not they enjoy reading news online. Find the probability that at least 3 say they enjoy reading news ..
a survey found that womens heights are normally distributed with a mean 64.4 in. and a standard deviation 2.5 in. a
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