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Customers arrive at Flourish and Blotts randomly and independently of each other at a rate of 10 per day, on average. Assume that Flourish and Blotts is open 24 hours a day and a customer has just arrived.
a) What is the average time between customers and the standard deviation of the time between customers?
b) What is the probability that the next customer arrives in the next hour?
c) What is the probability that no customers arrive in the next hour?
d) What is the probability that the next customer arrives in 60 - 90 minutes time?
a design is made up of five components in parallel. only one of the components must function for the system to operate.
A number, denoted by X1> is chosen at random from the set of integers {I, 2, 3, 4}. A second number, denoted by X2, is chosen at random from the set {1, 2, ...
a pump is designed to move water and deliver to a vertical distance of 80m what energy per kg of water must be supplied
What is the expected value and variance of the number of deliveries in a 700-letter group?
A firm draws a random sample of 18 ball bearings from the day's output. The sample variance of their diameters is 0.009 inches.
n american roulette wheel has 38 slots 18 are red 18 are black and 2 are green. let r be the number of spins until you
Random samples, each of size n = 10, were taken of the lengths in centimeters of three kinds of commercial fish, with the following results.
a. Find the point estimate of the percentage of people who visit a theme park when they take a trip.
1.females in a certain class rated their intelligence with a mean of 6.5. the males in the same class rated their
A random sample of 25 tablets of buffered aspirin contains, on average 325.05 mg of aspirin per tablet, with a standard deviation of 0.5 mg.
Analyze the data to determine if multicollinearity and heteroskedasticity are present.
Find a 95% confidence interval for the population mean concentration of uric acid in this patient's blood. (Round your answer to two decimal places.)
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