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Question: An elevator containing five people can stop at any of seven floors. What is the probability that no two people get off at the same floor? Assume that the occupants act independently and that all floors are equally likely for each occupant.
Assume that samples of size 2 are randomly selected with replacement from this population of four values. The first samples selected is 11,9. What is the mean of the sampling distribution of means?
Customers arrive at a fast-food restaurant with one server according to a Poisson process at a mean rate of 30 per hour. The server has just resigned, and the two candidates for the replacement are X (fast but expensive) and Y (slow but inexpensiv..
in a study of 420006 cell phone users 164 subjects developed brain cancer. test the claim that cell phone users
consider an arbitrary data set x1 y1 x2 y2...xn yn. let xbar and ybar denote the respective sample means for the
Using the empirical rule, what is the approximate percentage of women between 156cm and 166cm? Using Chebyshev's Theorem, at least what percentage of women are between 149cm and 173cm?
The IQ of a randomly chosen individual is modeled using a Gaussian random variable.- what percentage of the population have an IQ of at least 140 and thereby are considered "genius?"
International food survey, part 2. Look again at the data from the Gf K Roper Worldwide survey on food attitudes in Exercise 45. a) If we select a respondent at random, what's the probability we choose a person between 13 and 19 years old who ag..
How much confidence would you place in using 27% as an estimate of the fraction of people who use emoticons?
Suzan sees a bag of marbles, she grabs a handful at random. She has seen a bag containing 4 red marbles, 4 green ones, 2 white ones, and 3 purple ones, She grabs 5 of them. Find the probability of the following event expressing it as a fraction in lo..
compute the probability that the sum of dots on three dice is
Use your calculator to find the Linear Regression model relating h and d to four decimal places. Does the bioclimatic rule, , appear to be approximately correct?
poker is a card game where a poker-hand is made up of 5 cards from a deck of 52 cards. a deck of 52 cards has four
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