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The door on the computer center has a lock which has five buttons numbered from 1 to 5. The combination of numbers that opens the lock is a sequence of five numbers and is reset every week.
(a) How many combinations are possible if every button must be used once?
(b) Assume that the lock can also have combinations that require you to push two buttons simultaneously and then the other three one at a time. How many more combinations does this permit?
How many gears should be produced in each run at what minimum cost and what is the cycle time?
If a statistics professor plans classes so carefully that the lengths of her classes are uniformly distributed between 48.0 and 53.0 minutes what is the probability that a given class period runs greater than 51.25 minutes.
Mean 52 and standard deviation 7; N(52, 7). According to the 68-95-99.7 rule, what percentage of jazz CDs play between 38 and 59 minutes?
The following data represents the amount of time ( in minutes ) that a person had to wait for a bus to work on a random sample of 5 working days.
Past data reveals that the graduation rate was 72% for the medical school at a university. If 10 medical students are randomly selected for that school. Find the probability that only 4 of them will graduate.
Write in interval notation the real numbers greater than or equal to 3 and less than 9. Translate the verbal expression into an algebraic expression: a cubed minuis b cubed.
Find out the cheapest way of manufacturing today's batch of NasaMist.
List the constraint(s) that are not binding and interpret their slack/surplus variable(s). What does it mean that the right-hand side range of constraint 2 has no upper limit?
In testing for the equality of two population variances, when the populations are normally distributed, the10% level of significance has been used. To determine the rejection region, it will be necessary to refer tothe F table corresponding to an upp..
For each of the following situations, indicate the appropriate measure, incidence rate or prevalence rate and the numerical value of the rate.
Determine the probability that a student will complete the exam in more than 60 minutes but less than 75 minutes? Determine the probability of completing the exam in one hour or less?
Transportation officials tell us that 80% of drivers wear seat belts while driving. What is the probability that between 538 and 546 drivers in a sample of 700 drivers wear seat belts?
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