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A biometric security devise using fingerprints erroneously refuses to admit 1 in 1000 authorized persons from a facility containing classified information. The device will erroneously admit 1 in 10,00,000 unauthorized persons. Assume that 95% of those who seek access are authorized. If the alarm goes off and a person is refused admission, what is the probability that really authorized?
What is the critical value at .1 significance? Can we conclude the mean lifetime of light bulbs made by this manufacturer differs from 48 months?
Explain the distribution using the following characteristics. Determine the shape of the distribution. what score best identifies the center (average) for the distribution.
Assume that the profit from each sale is $750 for the situation in additional problem #1. What is the expected weekly profit for a salesperson?
What is the probability that exactly 7 cabinets are defective? What is the probability that there are more than 8 defective file cabinets?
What is the difference between resampling (bootstrapping) and double sampling in research? Is there any difference or is the same? Please explain your response?
The number of children, x, belonging to each of eight families registering for swimming was 2, 2, 2, 4, 2, 1, 2, 2. Find the mean, x. (Give answer correct to 2 decimal places.)
Whirltag claims that the useful lifetime of its dishwashers is normally distributed with a mean of 3 years and a standard deviation 1 year.
The service call can take 1, 2, 3, or 4 hours. The different types of malfunction occur at about the same frequency. Develop a probability distribution for the duration of a service call.
Random sample of 100 pieces of wire and wants to see if the thickness of a batch of wire meets minimum specifications. Assume that the population mean is 0.45 inch, with a standard deviation of 0.03 inch.
Find the probability that the mailed item was First Class or it went to a home.Find the probability that the mailed item was an Ad.
Let X be a random variable with probability density distribution given by. Find the probability density function of Y=10X - 4.
Please help me with the following 3 problems. There are only a few that I can't seem to figure out. Please use excel and show me a step by step solution to give me a full understanding. Thanks a lot!
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