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You have decided to model an input process for a simulation study using an exponential distribution for the arrival process. From a random sample of data, you obtain the following statistics: sample mean = 25, sample variance = 529, sample median = 20, min value = 3, max value = 60. The best point estimate for the unknown parameter for this exponential arrival process is:
Construct a 99% confidence interval for the average length of usage time to recharge.
If demand is normally distributed, a basic EOQ is appropriate. a single-period model could not be appropriate. we should produce to fill demand, rather than filling it through orders.
A cell phone company collects data from a random sample of 500 households. The results indicate that 135 of the households would add an extra cellular number, provided it was offered at a reduced monthly cost.
How many different ways to be appointed head of a division How many different ways could the three new heads be appointed?
Estimate is too low for households in British Columbia. Can the value 0.64 be rejected if a survey of 490 homes in BC yields 331 with one or more lawn mowers?
The university policy department must write, on average, five tickets per day to keep department revenues at budgeted levels. Suppose the number of tickets written per day follows a Poisson distribution with mean of 6.5 tickets per day. Interpret ..
q1. according to a study several years ago the average bmw driver earns 82 600 per year. suppose a researcher believes
A random sample of 85 group leaders and supervisors revealed that they worked an average of 6.5 years before being promoted. The population standard deviation was 1.7 years. Using the 0.95 degree of confidence, what is the confidence interval for ..
A personnel manager for a large corporation feels that there may be a relationship between absenteeism and age and would like to use the age of a worker to develop a model to predict the number of days absent during a calendar year.
Would one make clear (summarize) the differences between the following and when they are used or what they are applied to.
Personal phone calls received by a new employee was 3,5, and 6. assume that samples of size 2 are randomly selected with replacement from this population of three values. Find the mean of the distribution.
probability based on addition rule.a sample of automobile dealerships found that 19 of automobiles sold are silver 22
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