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Customers arrive at a certain business at a rate of 6 per hour. Assuming a Poisson model for their arrival, answer the following questions.
a) What is the probability that no customers come between 10:00 and 10:20?
b) What is the probability that exactly two customers come between 10:00 and 10:20?
c) What is the probability that more than 6 customers come between 10:00 and 11:00? Less than 6? Exactly 6?
d) Sam is working a 4-hour shift. What is the probability that between 20 and 30 (inclusive) customers come on his shift?
e) Why might a Poisson model not be a very good model for some businesses?
a birth is selected at random. define events b the baby is a boy and f the mother had the flu during her pregnancy.
A coin is biased so that a head is three times as likely to occur as a tail. Find the expected number of tails when this coin is tossed twice.
Describe the properties of marginal probability and conditional probability.
question an independent golf equipment testing facility compared the difference in the performance of golf balls hit
Choose your favorite company or brand and search finance.yahoo.com with that company name and "historical stock prices."
Hoops. A basketball player with a poor foul-shot record practices intensively during the off-season. He tells the coach that he has raised his proficiency.
scatter plot correlation coefficient and regression equation.do a complete regression analysis by performing the steps
The mean for a sample of n=16 scores has an expected value of 50. This sample was selected from a population with a mean of µ=50.
In a survey about soft drinks it was found that 5% of the respondents like diet soft drinks. 12% of them liked the brand Coke. Of all the Diet soda drinkers 40% liked Coke.
The random variable represents the number of adults ages 55 and older who want to reach their 100th birthday. Construct a binomial distribution.
a researcher conducted a study on the effects of stress on migraines. the researcher computed the number of migraines
Run a regression analysis of the data and determine whether there is a linear relationship between inflation and total return on stocks for the periods under study.
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