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Your store has an average of 40 customers per an eight hour shift. You need to know whether you should hire 1, 2, 3 or 4 salespersons. The waiting times is 15 minutes with one salesperson, 12 minutes with two, 10 minutes with three and 6 minute with a fourth. The cost per a minute that customers wait is $1.00. The cost per a salesperson per an hour is $8.00. How many salespersons should you hire?
Assuming that the data constitute independent random samples from normal populations with equal variances, construct a 99% confidence interval for the difference between the true average heat-producing capacities of coal from the two mines.
A sample of 9 production managers with over 15 years of experience has an average salary of $71,000 and a sample standard deviation of $18,000.
If the budget analyst wanted to build a regression model using only two independent variables to predict nursing salaries, what variables should be used?
Olive weights are classified according to a unique set of adjectives implying great size.
what is the significance of hypothesis in research? what are type i and ii errors inhypothesis
the westhouser paper company in the state of washington currently has an option to purchase a piece of good timber
Comment on the production control situations depicted by the four control charts shown on the following page, and state what action, if any, would be necessary in each case.
A certain printer cartridge has demonstrated a mean time usage of 9 hours and a standard deviation of 22 minutes. What time usage guarantee (in hours) should the manufacturer advertise in order to ensure that only 4% of the cartridges fail to ..
Describe the population of interest for the survey
There evidence that the mean price is higher at Whole Foods Market than at the Fairway supermarket and interpret the meaning of the p-value in (a)
Estimate Carl's performance on the new machine.
What is the chance (rounded to the nearest hundredth)
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