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A division within a transportation company is responsible for performing maintenance on the fleet of trucks used by the company. Trucks in need of repair arrive to the maintenance division according to a Poisson process having a rate of 0.3 trucks per hour.
Suppose we begin observing the maintenance division at some point in time.
(a) What is the probability that it is at least 2 hours until the first truck arrives?
(b) On average, how long would you expect it to be until the first truck arrives?
(c) What is the probability that the third truck arrives within 15 minutes of the second truck?
A retailer wants to estimate with 99% confidence the number of people who buy at his store. A previous study showed that 15% of those interviewed had shopped at his store.
The insurance company charges an annual rate of $250 for the collision coverage. What is the expected value of the collision policy holder?
Thirty-five percent of the democrats and 70% of the republicans favor the bill. the bill needs a simple majority to pass. using a probability tree, determine the probability that the bill will pass.
Arbitrarily choose someone from sample. Determine the probability that they are Jewish and Democrat?
in a recent survey ten percent of the homes in montana were found to own a miley cyrus action figure. in a sample of
Assuming that the population standard deviations are the same, perform a two independent samples t-test on the hypotheses Null Hypothesis: μ1 = μ2, Alternative Hypothesis: μ1 ≠ μ2. What is the test statistic and p-value of this test?
\Write down the general formula for the discrete uniform probability distribution function. Now write down the probability distribution function for the random drawing of tile numbers. Is this a discrete uniform distribution?
The fill amount of bottle of soft drink has been found normally distribute with a mean of 2.0 liters and a standard deviation of 0.05 liters. If a random sample of bottles is selected, what is the probability that the sample mean will be between 1..
Use this information to find the upper and lower limits of the first class if you wish to construct a frequency distribution with 10 classes.
1. what are the assumptions of the simple linear model?2. name three assumptions of the anova
In a sample of 32 DVD players, what is the probability the average life will be less than 8 years (96 months)? (please round your answer to 4 decimal places).
in constructing a confidence interval for the mean the z distribution provides a result nearly identical to the t
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