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Customers arrive at a thrift bank according to a poisson distribution with a mean of 45 customers per hour. Transactions per customer last about 5 minutes and are exponentially distributed. The bank wants to have a single line multiple-teller operation, similar to the ones used in airports and post offices. The manager is conscious of the fact that customers may switch to other banks if they perceive that their wait in line is ‘exclusive'. For this reason, the manager wants to limit the average waiting time in the queue to no more than 30 seconds. How many tellers should the bank provide?
Due to financial hardship, the Nyke shoe company feels they only need to make one size of shoes, regardless of gender or height. They have collected data on gender, shoe size, and height
Plot CEO salaries against the net profit of their respective companies, do you expect to find a linear correlation between the two? Explain.
Obtain a 95% confidence interval for the mean monthly rent for two-bedroom apartments. Assume that measurements are normally distributed. Round to two decimal places.
Select a well-designed sample of at least 30 units. (Describe the population to be studied and the sampling frame). Two variables should be measured with a potential for correlation; if you measure more than two variables, you must correlate two at a..
Estimate with 90% confidence the mean number of weeks out of town, assuming that the population is normally distributed with a standard deviation of 6 weeks.
the following data show samples of three chain stores in three different locations in one town and the amount of
Explain the concept of "Regression Analysis", its types (3 types at least), applications and usefulness. Provide real application of its usage. Some times, Maximum likelihood estimation is not applicable, Explain and provide an example?
the u.s. national average door-to-doctor wait time for patients to see a doctor is now 21.3 minutes. suppose such wait
a random sample of 225 sat scores has a mean of 1500. assume that sat scores have a population standard deviation of
Two boats the prada (Italy) and the oracle (USA) are competing for a spot in the upcoming Americans cup race. They race over a part of the course several times. Below are the sample times in minutes at the .05 significance level.
question describing data measures of central tendencynbspnbspnbspnbspnbspnbspnbspnbsp number of days from order date to
A coin is flipped e times and heads (h) or tails (t) are recorded:
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