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A busy restaurant determined that between 6:30 P.M. and 9:00 P.M. on Friday nights, the arrivals of customers are Poisson distributed with an average arrival rate of 2.12 per minute.
(a) What is the probability that at least 13 minutes will elapse between arrivals?
(b) What is the probability that at least 8 minutes will elapse between arrivals?
(c) What is the probability that at least 1 minute will elapse between arrivals?
(d) What is the expected amount of time between arrivals?
consider the following. give your answers correct to two decimal places.a find the standard score z such that the area
Draw the histogram for these data using an initial class boundary of , an ending class boundary of , and classes of equal width.
a system with 3 components is such that the system fails if at least one of the individual components fail.the
The insurance company charges an annual rate of $250 for the collision coverage. What is the expected value of the collision policy holder?
What are the advantages and disadvantages of each? Explain how the empirical rule help explain the ways in which the values in a set of numerical data cluster and distribute?
Is the gender distribution for theater goers significantly different from the distribution for the general college? Test at the .05 level of significance.
Some television stations attempt to gauge public opinions by posing a question on the air and asking viewers to call to give their opinions.
a local tennis pro-shop strings tennis rackets at the tension pounds per square inch requested by the customer.
a certain kind of appliance requires repairs on the average once every 2 years. assuming that the times between
In a water treatment plant, the turbidity level, and is suspected is linearly related to inches of accumulated rainfall in the month, x. The following information related to the waste water plant is available:
The probability that an American CEO can transact business in a foreign language is .20. Ten American CEOs are chosen at random.(Round your answers to 4 decimal places.)
Test whether there is any change in IQ after the training program. (The absolute value of t for 4 degrees of freedom at 1% level for one-tailed and two tailed tests are 3.747 and 4.604 respectively.
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