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1) The shape of the distribution of the time required to get an oil change at a 10-minute oil change facility is unknown. However, records indicate that the mean time is 11.5 minutes, and the standard deviation is 4.4 minutes.
a) To ompute probabilities regarding the sample mean using the normal model, what size sample would be required?
b) What is the probability that a random sample of n=45 oil changes results in a sample mean time less than 10 minutes?
They also know that the distribution of loss from fire has a skewed distribution; many have $0.00 losses and a few have large losses.
assume you are in charge of a production line which allows for no more than 1 defectives in order to be in compliance.
The salaries of the employees of a corporation are normally distributed with a mean of $25,000 and a standard deviation of $5,000.
The Institute for Operations Research and the Management Sciences
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what is the sample variance and the estimated standard error for a sample of n 4 scores with ss
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