Probability p of heads is tossed
A coin with a probability p of heads is tossed independently n times. Let Xi=1 if the ith toss results in a head, and let Xi = 0 if the ith toss is a tail. What is E(X1X2X3.......Xn)?
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All the major stock market indexes posted heavy losses in 2008. The mean one-year return for stocks in the S&P 500, a group of very large companies, was -38.5%.
What happens to the standard deviation of the distribution of sample means (DSM) as the sample size increases? Does the standard deviation of the DSM also increase? Why or why not? Explain.
Airlines use a measure of meeting the schedule when they focus on-time departure. Suppose they record whether the event "left the gate within 5 minutes of schedule" to reflect that they met the schedule.
Suppose the average number of lions seen on a day one tour in a safari park is 5, what is the probability that on a particular day tourist will see frwer than 4 lions?
Suppose the unemployment rate in one country exceeds the rate in another country. Explain why the country with the lower rate can have, from the perspective of the other country, a higher unemployment rate.
This exercise illustrates that poor quality can affect schedules and costs. A manufacturing process has 100 customer orders to fill. Each order requires one component part that is purchased from a supplier. However, typically, 2% of the components
Compute the value of the appropriate test statistic.
Consider a society concerned about crime. A measure of success could be the number of crimes of various types that occur in a given year. What else should we measure?
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