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Suppose that you arrive at a single-teller office to find three customers waiting in line and one being served. If the service time is exponential with rate 2 minutes, calculate the probability that you will have to wait in line more than 10 minutes before being served. (Gamma)
Could anyone help me this problem?
Which samples show unequal variances? Use α = .05 in all tests. Show the critical values and degrees of freedom clearly and illustrate the decision rule.
The following table is from the Social Security Actuarial Tables. For each age, it gives the probability of death within one year, the number of living out of an original 100,000 and the additional life expectancy for a person of that age.
Average number of mosquitoes in pond is 80 per square meter with a standard deviation of 12. If 16 square meters are choses at random for a mosquiot count, find probabilty that the average of those counts is more than 83.0 mosquitoes per square me..
the xyz inc. buys mother boards for its computer assembly. the following information is available use generally
at a local middle school 60 of students are enrolled in choir or band. if a random sample of 5 students is taken what
There are two types of dependent samples: Those that measure something before and after an "event" and those that matching two samples of the same phenomena being observed. Which of the following is NOT true about such a test:
A manager of a supermarket estimated that 87% of customers use coupons in their grocery purchases. How large a sample is required to estimate the true proportion to within 0.01 with 98% confidence?
a mechatronic assembly is subjected to a final functional test. suppose that defects occur at random in these
What time usage guarantee (in hours) should the manufacturer advertise in order to ensure that only 4% of the cartridges fail to meet the guaranteed time usage?
the national sporting goods association conducted a survey of persons 7 years of age or older about participation in
To test whether there is any association between two variables using Chi-Square test for independence.
a quiz cosists of 10 multiple-choice questions each with 6 possible answers. for someone who makes random guesses for
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