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6.2% of dvd of a certain type are defective.let the random variable x represent the number of defective dvd players among 200 randomly selected dvd of this type suppose u have to find the probability x is less than 8 which distribution does this have?
Sampling variability refers to the idea that different samples will include different individuals
To get the best deal for CD player, Jessica called eight appliance stores and asked the cast of a specific model. The prices she quoted are listed below. Show all work. Compute the standard deviation.
Find the marginal PMF pY (y). Hint: One possibility is to start with the answer to part (c), but the algebra can be messy. But if you think intuitively about the procedure that generates Y , you may be able to guess the answer.
The mean number of passengers per flight is 160 with a standard deviation of 20. The aircraft used for the route has 200 seats.
According to the U.S. Bureau of the Census, 75% of adults regularly drank alcohol in 1985. An investigator predicts that fewer adults drink now than drank then.
Book inventory Record information - Ratio, interval, nominal or ordinal.
In a normal distribution of 1,000 aptitude test scores, with a mean of 60 and a standard deviation of 8, how many scores fall:
What is the probability of either X or Y occurring? What is the probability that neither X nor Y will happen?
What is the probability that she never misses in 10 shots? there are exactly 8 bulls eyes in 10 shots? there are no more that 8 bulls eyes in 10 shots? she gets atleast one bulls eye?
What is the probability that it will crash at least two times in a given semester? What is the probability that it will not crash at all in a given semester?
In a sample of 476 adults selected randomly from one town, it is found that 9 of them have been exposed to a particular strain of the flu. Find the Pvalue for a test of the claim that the proportion of all adults in the town that have been exposed..
In an online survey of 4,001 respondents, 8% were classified as productivity enhancers who are comfortable with technology and use the Internet for its practical value (data extracted from M. Himowitz, "How to Tell What Kind of Tech User You Are,"..
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