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For a fair coin tossed three times, the eight possible simple events are HHH, HHT, HTH, THH, HTT, THT, TTH, and TTT. Let X = number of heads.
Find the probability distribution for X by writing a table showing each possible value of X along with the probability that the value occurs.
List three important assumptions you must make to interpret the Cp value. What is the theoretical process standard deviation, σ?
A manuscript is sent to a typing firm consisting of typists A, B, and C. If it is typed by A, then the number of errors made is a Poisson random variable with mean 2.6; if typed by B, then the number of errors is a Poisson random variable
An annexation suit is being considered against a county subdivision of 600 residencies by a neighboring city. If 40% of the residents favor being annexed and if a random sample of 15 will be collected,
the number of yearly breakdowns for the power generator observed over the past 20 years at orlando utilities is
are americas top chief executive officers ceos really worth all that money? one way to answer this question is to look
Using α = .05 test for significance differences among the population mean wasted time for theses three urban areas. What is the p-value? What is your conclusion?
Given a level of confidence of 99% and a population standard deviation of 10, what other information is necessary:
Assuming the tires are selected at random from among all tires being produced, how many tires in the shipment of 3000 are expected to have a lifetime that is less than 35,000 miles?
listed below are the lengths in minutes of randomly selected cds of country rock and movie soundtracks. construct a 94
For the following data set, indicate whether the shape of the distribution is normal, positively skewed, or negatively skewed. Provide evidence for your answer by calculating the mean, mode, and median.
Sample of 25 rockets in his latest spaceship. He thinks they might weight less than the average rocket. The sample has on average 102 lbs with a standard deviation of 10 lbs. The average rocket weights 106 lbs.
a. What z-score separates the highest 25% from the rest of the scores?
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