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Three machines continuously process an unending number of jobs. The time it takes to process a job on machine A is a Uniform [0,4] random variable, the time it takes to process a job on machine B is Uniform [1,3] random variable, and the time it takes to process a job on machine C is an Exponential random variable with mean 2. What is the approximate probability together the 3 machines can process at least 90 jobs by time ?
The number of power outages at a golf course has a Poisson distribution with a mean of 7 outages per year. the probability that there will be between 1 and 2 inclusive power outages in a year is?
State the null hypothesis for the non-oil-dependent/oil-dependent comparison. Calculate the difference between the means of the democracy scale for non-oil-dependent and oil-dependent countries, Calculate the standard error of the difference. Calcula..
17). A study was conducted to determine whether big-city and small town dwellers differed in their helpfulness to strangers. In this study, the investigators rang the doorbellsof strangers in living in Newyork city or small towns in the vicini..
The normal distribution is a type of probability density function. Areas found under this curve are equivalent to probabilities. For example, the probability that z lies between a and b is denoted P(a
Hematologic data for patients with aplastic anemia
How closely does the number of trading accounts relate to the total assets of the 10 largest online stock brokerages? The table below presents data on these brokerages. The number of accounts is in thousands, and assets are in billions of dollars.
An auto insurance company classifies policy holder
The energy information administration records per capital consumption of energy
Suppose than an instructor want wants to investigate whether the font used on an exam affects student performance as measured by the final exam score. She uses four different fonts (time , courier, helvetica, comic sans ) and randomly assigns h..
Research Scenario in which z-score is valuable
A worker at Disneyworld in Orlando is assigned the task of getting 100 guests to complete a survey about their experience at the park. Suppose each individual guest that the worker asks will agree to complete the survey with a probability of 0..
A randomly chosen individual makes 3 claims
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