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Using a single-server queuing system with Poisson arrivals of 10 units per hour and a constant service time of 2 minutes per unit. How do I go about calculating how long the customer waiting time will be in seconds, on average?
let x denote the number of heads obtained when a fair coin is tossed 4 times.a what is ex and varx?b repeat 10 times
every year sixth-grade students in ohio schools take proficiency tests. the list of sixth-grade reading score changes
Find the proportion of all graduate students at this university with an undergraduate major in mathematics at the 90% confidence level.
A political scientist obtained recordings of election-night acceptance speeches of seven newly elected representatives to the US Congress.
a psychologist would like to evaluate the relationship between academic ability as measured by the act and academic
a nascar team goes on tour for six moths. one major piece of equipment for the car is subject to breakdowns cause by
Consider the experiment of rolling a pair of dice. Suppose that we are interested in the sum of the face values showing on the dice.
A group of 20 sales associates agree to go through a week-long sales class to improve their productivity. The amount of their sales are computed for one month before and one month after the training course.
The distance travelled (in km) by a courier service motorcycle on 40 trips were recorded by the driver. Define the random variable and the data type.
If 60 percent of those people chewing the gum are successful in stopping smoking, what is the probability that in a group of four smokers using the gum at least one quits smoking?
the number of hybrid cars that have be requested for rental from a car rental office during a 50 day sample period is
What is the difference between common cause variation and special cause variation?
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