Table of random numbers
A company has 1,250 employees, and you want to take a simple random sample of n = 60 employees. Explain how you would go about selecting this sample by using the table of random numbers. Are there numbers that you cannot use? Explain.
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The quality-control inspector of a production plant will reject a batch of syringes if two or more defective syringes are found in a random sample of eight syringes taken from the batch. Suppose the batch contains 1% defective syringes. What is th
Let X have an exponential distribution with mean sigma.
Members of the Senate took a battery of tests to assess their abilities. In the Talking As If You Are Saying Something Test, the average score was 40 with a standard deviation of 5.
The average flight from point A to point B takes 100 minutes with a standard deviation of 10 minutes.
A toll bridge charges $1.00 for passenger cars and $2.50 for other vehicles. Suppose that during daytime hours, 60% of all vehicles are passenger cars. If 1000 vehicles cross the bridge that afternoon, what is the expected toll revenue?
For the following, decide whether the Binomial or Hypergeometric distribution is the most appropriate model. Give a brief description of your reasoning.
A homogenous transition probability matrix is given below. Find the steady state probabilities of state.
The average age of Amtrak passenger train cars is 19.4 years. If the distribution of ages is normal and 24% of the cars are olderthan 21.1 years, find the standard deviation.
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