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The average length of life of a brand of light bulb is 2000 hours with a population standard deviation of 120. A sample of 100 light bulbs is to be taken. What is the probability of the sample mean being less than 2020 hours? P(xbar< 2020)
A poll found that 69.9% of citizens felt the government was not working well. If 7 people were randomly selected, what is the probability that all 7 felt the government is not working well?
Management at the Kansas City Corporate office for tax prepration wants to accomplish a business objective by conduting a study of the waiting time in its tax offices in different states.
a gas undergoes three processes in series that complete a cycleprocess 1-gt2 compression from p1 10 lbfin2 v1 4.0 ft3
Three defective electric toothbrushes were accidentally shipped to a drugstore by Cleanbrush Products along with 17 nondefective ones. What is the probability the first two electric toothbrushes sold will be defective.
a machine produces 1000 rubber 0rings per hour. each ring has a .9 probability of meeting a thickness specification.a
A standard deviation of 8. If 100 people are randomly selected, find the probability that their mean blood pressure will be greater than 122.
How many different possibilities exist for the set of iced-tea drinks that a given participant will taste? (Show how you calculated your answer.)
an srs of 40 san diego county schools graduates showed that 26 of the 40 enrolled in a college or university right out
The stakeholders in the simulation have different opinions as to the proper course of action the organization should take. Write a 350-word memo to the stakeholders in the simulation.
A Discrete random variable can be described as Binomial distribution if is satisfies four conditions, Briefly discuss each of these conditions
A firm keeps account for 28 customers. 12 of these are defined as new customers and 14 are locally based. If just 3 new customers live locally, how many established customers do not live locally?
several years ago in a survey of n 625 randomly selected adults a polling organization asked do you favor lowering the
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