Q: A student figures that he has a 30% chance of being
A student figures that he has a 30% chance of being let out of class late. If he leaves class late, there is a 45% chance that he will miss his train. What is the probability that it will cause him to...
See AnswerQ: A nervous kicker usually makes 70% of his first field goal
A nervous kicker usually makes 70% of his first field goal attempts. If he makes his first attempt, his success rate rises to 90%. What is the probability that he makes his first two kicks?
See AnswerQ: On the Titanic, the probability of survival was 0.323
On the Titanic, the probability of survival was 0.323. Among first-class passengers, it was 0.625. Were survival and ticket class independent? Explain.
See AnswerQ: If the sex of a child is independent of all other births
If the sex of a child is independent of all other births, is the probability of a woman giving birth to a girl after having four boys greater than it was on her first birth? Explain.
See AnswerQ: Facebook reports that 70% of its users are from outside the
Facebook reports that 70% of its users are from outside the United States and that 50% of its users log on to Facebook every day. Suppose that 20% of its users are U.S. users who log on every day. Mak...
See AnswerQ: A citrus farmer has observed the following distribution for the number of
A citrus farmer has observed the following distribution for the number of oranges per tree. How many oranges does he expect on average?
See AnswerQ: People with spinal cord injuries may lose function in some, but
People with spinal cord injuries may lose function in some, but not all, of their muscles. The ability to push oneself up is particularly important for shifting position when seated and for transferri...
See AnswerQ: A coffee shop tracks sales and has observed the distribution in the
A coffee shop tracks sales and has observed the distribution in the following table. What is the average daily sales that it can expect?
See AnswerQ: What is the standard deviation for Exercise 1 ?
What is the standard deviation for Exercise 1 ?
See AnswerQ: What is the standard deviation for Exercise 2 ?
What is the standard deviation for Exercise 2 ?
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