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Suppose U has a uniform distribution on [0,1], and define X = -ln(U). Find the probability density function of X.
Scores by women on the SAT-I test are normally distributed with a mean of 998 and a standard deviation of 202. Scores by women on the ACT test are normally distributed with a mean of 20.9 and a standard deviation of 4.6.
A company selling vegetable seeds in packets of 20 estimates that the mean number of seeds that will actually grow is 18, with a standard deviation of 1.2 seeds
College graduates, and half of the college graduates are married. What is the probability that a randomly chosen worker is: Neither married nor a college graduate?
As evidenced by the growing number of corporate scandals of which almost all involve the CEO and other top officers, corporate America in many cases is missing one essential leadership ingredient-character.
For the other 25 percent of the population, the drug has no effect on colds. If an individual tries the drug for a year and has 2 colds in that time, what is the probability that the drug is beneficial to that individual?
1. nbspif the mean number of hours of television watched by teenagers per week is 12 with a standard deviation of 2
a television station estimates that 60 of college studentswatch the super bowl. for a sample of 240 students selected
She randomly surveys 426 schoolmates and finds that 150 report they fear public speaking. Conduct a hypothesis test at the 5% level of significance to determine if the percent at her school is less than 40%
In a weekly lottery, each $1 ticket sold adds 50 cents to the jackpot that starts at $1 million before any tickets are sold. The jackpot is announced each morning to encourage people to play. On the morning of the ith day before the drawing, the c..
Parents' income and student loans. How well does the income of a college student's parents predict how much the student will borrow to pay for college?
An individual whose level of exposure to a certain pathogen is x will contract the disease caused by this pathogen with probability P(x). If the exposure level of a randomly chosen member of the population has probability density function f , dete..
Suppose 250 randomly selected people are surveyed to determine if they own a tablet. Of the 250 surveyed, 98 reported owning a tablet.
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