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Customers arrive at an automated coffee vending machine at a rate of 3 per minute, following a Poisson distribution. The coffee machine dispenses a cup of coffee in exactly 15 seconds.a. What is the average number of people waiting in line?b. What is the average number in the system?c. How long does the average person wait in line before receiving service?
Match the linear correlation coefficient to the scatter diagram.
A study shows that scores on an aptitude test are normally distributed with a mean of 70 and a standard deviation of 12
part 1- calculus has many uses in real life. discovered simultaneously by sir isaac newton and gottfried wilhelm
Purpose: One of the objectives of this class is to make students better consumers of the information they are presented with. Knowing how to interpret poll results is an important step in determining validity of studies you will assess in you..
A furniture cabinet maker produces two types of cabinets that house and hide plasma televisions.
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 bird lands on a power line of length L
the westhouser paper company in the state of washington currently has an option to purchase a piece of good timber
Describe what is meant by the statement that "the margin of error was given as ±1 percentage point." What confidence interval is USA Today talking about?
The number of loads of laundry washed per month was tracked for women and men living in college dorms.
Generating the greatest good for the greatest number.
A simple random sample of 40 salaries of NCAA football coaches has a mean of $415,953 and a standard deviation of $463,364. Construct a 95% confidence interval estimate of the mean salary of an NCAA football coach.
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