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A simple random televisions will be selected to test for the mean lifetime in hours. Assume that televisions lifetimes are normally distributed with population standard deviation of 27 hours. How many televisions must be sampled so that a 99% confidence interval will have margin of error of 6 hours?
Find the 95% confidence interval of the mean number of ER patients treated each day in the hospital if the standard deviation is 8 instead of 4.
The time between arrivals of customers at the drive-up window of a bank follows an exponential probability distribution with a mean of 10 minutes. What is the probability that the arrival time between customers will more than 20 minutes?
The use of cellular phones in automobiles has increased dramatically in the last few years. Of concern to traffic experts, as well as manufacturers of cellular phones
a) Describe each of the following models of mortality with their strengths and weaknesses;
Pedestrian Walk Buttons New York City has 750 pedestrian walk buttons that work, and another 2500 that do not work (based on data from "For Exercise in New York Futility, Push Button
If you were the lawyer for the Collins couple how would you have countered the above argument?
What are the hypotheses?- Verify that the conditions are satisfied and find the P-value.- Are the trustees right to be concerned, or is the president correct? Explain.
A sample of n people is taken to obtain their opinion. The proportion p¯ in favor in the sample is taken as an estimate of p. Using the Central Limit Theorem, determine how large a sample will ensure that the estimate will, with probability .95, b..
You are an HR consultant with your own consulting firm. Two clients came to see you with different work related problem. Advice the clients regarding their rights in the given situation based on the provisions of Employment Act 1955.
Gamma Corporation is considering the installation of governors on cars driven by its sales staff. These devices would limit the car speeds to a preset level
Super Markets, Inc. is considering expanding into the Scottsdale, Arizona, area. Ms. Luann Miller, Director of Planning, must present an analysis of the proposed expansion to the operating committee of the board of directors.
1. someone offers you a game of unbiased coin toss where you win 111 usd on tails and lose 85 usd on heads. what is the
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