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Suppose you want to estimate, with 95% confidence, the population mean force required to break an insulator to within +/- 25 pounds. On the basis of a study conducted the previous year, you believe that the standard deviation is 100 pounds. Determine the sample size needed.
Given that a tutorial has just ended and there are no students currently waiting for the professor, what is the mean time until another tutorial can start?
Which of the given is the example of a discrete random variable? Which of the given is an example of continuous random variable?
a friend of mine is giving a dinner party. his current wine supply includes 8 bottles of zinfandel 12 of merlot and 11
a researcher wants to find out how college students feel about their social security system. which of the following
Determine the probability that tire wears out before 70,000 miles?
schedulingscheduling is explicitly part of our lives. we schedule everything and need to in order to plan our
The probability that he passes both finals is .60. What is the probability that the student will pass at least one of these final examinations?
Gas station sells 1400 gallons of gasoline per hour if it charges $ 2.05 per gallon but only 1100 gallons per hour if it charges $ 2.95 per gallon. What should gasoline price be to sell 1000 gallons per hour?
samples of three materials under consideration for the housing of machinery on a seagoing vessel are tested by means of
Write a brief comparison of the distributions of weights for the two groups. Include appropriate graphics.
A sample of 400 students throughout a particular school district reveals a mean score of 498. Estimate the mean score for all the students in the district
In studying a chemical reaction, a chemist performed a 23 factorial design and obtained the following results:
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