What is the probability that a random sample have mean
The average verbal sat score of all students is 540 and the population standard deviation is 30 sat points. what is the probability that a random sample of 36 students will have a mean verbal sat score that is great than 535?
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Applicants with exam scores in the lower 10% are directed to special retraining. What is the minimum score required not to be directed to retraining?
The population standard deviation is 30 sat points. what is the probability that a random sample of 36 students will have a mean verbal sat score that is great than 535?
A electrical device consists of 4 identical components arranged so that the device functions if and only if all four components are working. Find the mean lifetime of this device?
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A random sample of 90 printers discovered that 25 of them were being used in small businesses . Find the 95% limit for the population proportion of printers that are used in small businesses.
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