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The manager of a market can hire either Mary or Alice. Mary, who gives service at an exponential rate of 20 customers per hour, can be hired at a rate of $3 per hour. Alice, who gives service at an exponential rate of 30 customers per hour, can be hired at a rate of $C per hour. The manager estimates that, on the average, each customer's time is worth $1 per hour and should be accounted for in the model.
Assume customers arrive at a Poisson rate of 10 per hour
(a) What is the average cost per hour if Mary is hired? If Alice is hired?
(b) Find C if the average cost per hour is the same for Mary and Alice.
an automobile manufacturer obtains the microprocessors used to regulate fuel consumption in its automobiles from three
a cola-dispensing machine is set to dispense a mean of 2.026 liters into a container labeled 2 liters. actual
Which of the following would have a binomial distribution and evaluate the binomial coefficient
The students of Hugh Logan's math class took the Scholastic Aptitude Test. Their math scores are shown below. Find the mean score
A research firm conducted a survey to determine the mean amount people spend at a popular coffee shop during a week. They found the amounts spent per week followed a normal distribution with a population standard deviation of $4.
Some defendants in criminal proceedings plead guilty and are sentenced without a trial, whereas others who plead innocent are subsequently found guilty and then are sentenced.
Heights of 18-year-old men are approximately normally distributed, with mean 68 inches and standard deviation 3 inches.
Develop the estimated regression line. Jensen expects to use the machine 30 hours per week, develop a 95% prediction interval for the company's annual maintenance expense.
find the value of the linear correlation coefficient r. x 22.6 36.6 15.6 35.0 47.5 y 7 6 6 2 6 a 0 b -0.478 c
1- ounce chocolate chip cookies resulted in following calorie amounts. At α=0.01 level, is there sufficient evidence that average calorie content is greater than 110 calories.
Using test data on 20 types of laundry detergent, an analyst fitted a regression to predict CostPerLoad (average cost per load in cents per load) using binary predictors.
What must be true about the data sets to make the confidence intervals you constructed in parts (a) and (b) valid?
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