Limit for the population proportion of mice
In a sample of 60 mice, a biologist found that 42% were able to run a maze in 30 seconds or less. Find the 98% limit for the population proportion of mice who can run that maze in 30 seconds or less.
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Residents of the U.S. have been found to drink an average of 23.2 gallons of bottled water during 2012. If the standard deviation is 2.7 gallons, what is the probability that a randomly selected person drank between 22 and 30 gallons of water each
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What is the 99% confidence interval for the variance of exam scores for 25 algebra students, if the standard deviation of their last exam was 10.7?
What is the kinetic energy of the vehicle in Btu? If gasoline costs $4.10/gallon, how much money is saved by not stopping at the stop sign? Use your answer from part (c).
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What is the 99% confidence interval for the standard deviation of birth weights at County General Hospital, if the standard deviation of the last 28 babies born there was 1.3 punds?
Find the area of the normal curve for the following:
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