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Mr.Smith works on a temporary basis. The mean length of each job he gets is three months. If the amount of time he spends between jobs is exponentially distributed with distributed with mean 2, then at what rate does Mr. Smith get new job?
Statistics and Probability, Statistics
A survey found that people keep their televisions an average of 5.8 years. The standard deviation is 0.76 year. If a person decides to buy a new TV, find the probability that he or she owned the old one for the given amo ...
A study if the impact of stress on the amount of beta-endorphins released in the blood was reported. Researchers took beta-endorphin levels for 19 patients 12 hours before surgery and again 10 minutes before surgery. If ...
A political candidate wishes to determine if endorsing increased social spending is likely to affect her standing in the polls. She has access to data on the popularity of several other candidates who have endorsed incre ...
A child care center wants to determine if there is a relationship between how long a child naps in minutes (20,21,22,23,24,etc.,etc) and incidents of aggression (1,2,3,4,etc.,etc). What type of statistical test should be ...
A chemical company is interviewing two people to become its risk manager. One has a background of management positions chemical refineries. The other has a background providing risk management consulting services to depa ...
What percent of the measurements are found below the 30th percentile? Found above the 30th percentile? For the regression line y^ = 3x + 2 what is the best predicted value if x is 7? Assume that male and female births ar ...
Suppose you are a statistics consultant, hired to study whether a tax on alcohol has decreased average alcohol consumption in Australia. For a given sample of randomly selected individuals, you are able to obtain the dif ...
According to recent? study, 143 of 453 technology CEOs from around the world responded that technological advances will transform their business and 85responded that resource scarcity and climate change will transform th ...
Describe the theoretical problems of ethics (3), the objectives to solving them.
A student is to be selected randomly from a group of students. For each classification of freshman and sophomore, there is a math major, an art major, and a biology major. The probability of each individual being selecte ...
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