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Determine whether the distribution is a discrete probability distribution.
x P(x)0 0.001 0.002 1.003 0.004 0.00
Is the probability distribution a discrete distribution? why?
The time (in hours) until failure of a transistor is a random variable X which is exponentially distributed with mean = 50. It is observed that after 40 hours the transistor is still working. Find the conditional probability that X > 65.
Suppose that four families are surveyed and that each one reports whether its income exceeded the reported medium for that year. List the sample points.
Suppose you were trying to decide which of two machines to purchase. Furthermore, suppose the length to which the machines cut a particular product part was important. If both machines produced parts that had the same average length, what other co..
A researcher wants to see if there is a relationship between birth order and personality. A sample of n = 100 people is obtained, all of whom grew up in 3-child families.
The summation sign is usually represented by:
Given that 61% of eligible voters actually did vote, find the probability that among 1002 randomly selected eligible voters, at least 701 actually did vote.
Determine whether families with income of $40,000 will have to spend less than $6,500 to send their children to prestigious colleges. (Use α = 0.05.)
Explain what you could do to reverse the trend of competitive exclusion by humans so that we do not exhaust the limited resources of the Earth
The accompanying table summarizes randomly selected sample data for San Francisco Defendants in burglary cases.
Take pM and pF to be the proportions of all college males and females who worked last summer. We conjectured before seeing the data that men are more likely to work. The hypotheses to be tested are?
Assume rivets are defective independently of one another, each with the same probability. If 24% of all seams need reworking, determine the probability that rivet is defective?
Show that if the roots of the polynomial p are all real, then the roots of p' are all real. If, in addition, the roots of p are all simple, then the roots of p' are all simple.
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