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One hundred people line up to board an airplane. Each has a boarding pass with assigned seat. However, the first person to board has lost his boarding pass and takes a random seat. After that, each person takes the assigned seat if it is unoccupied, and one of unoccupied seats at random otherwise. What is the probability that the last person to board gets to sit in his assigned seat?
In a lottery game, you pick one number from 000 to 999. If you pick one such number what is the probability that you will win the lottery?
List and explain the variables you would collect in this study. There must be a minimum of three variables and two must meet the assumptions for a correlational analysis.
forecasting with time series analysis objective crusty pizza executives have to forecast december sales for the 10
On any given flight, an airline's goal is to fill the plane as much as possible without overbooking. If, on average, 10% of customers cancel their tickets, all independently of each other, what is the probability that a particular flight will be o..
ltbrgtas of last year only 20 of the employees in an organization used public transportation to commute to and from
A more general exponential reliability model may be defined by R(t)=a^(-bt) where a>1, b>0 and a and b are parameters to be determined. Find the hazard rate function, and show how this model is equivalent to R(t)=e^-(lambda*t).
Identify stories that exist in the data provided. A "story" is an analysis of what the data shows rather than just what the data says. Said another way, how might you interpret the data?
Five hundred eleven (511) homes in a certain southern California community are randomly surveyed to determine if they meet minimal earthquake preparedness recommendations. One hundred seventy three (173) of the homes surveyed met the minimum recommen..
A random sample of 16 has been collected from a population for which it is known that σ. The sample mean has been calculated to be 200.0. Construct and interpret a 90% confidence interval for the population mean.
A manufacturer creates widgets whose mass has mean 5 and standard deviation sigma. Ten widgets are shipped, and the shipment will be rejected if any of the widgets has mass = 7. Give the largest value sigma can be such that the probability of reject..
Please continue to remind yourself about the issue of rounding error and should develop a general classroom rule to round to a specific decimal point (i.e., 2 decimal points) for all calculations.
Suppose we wish to use the poll's results to justify the claim that fewer than 20 percent of business executives feel. Calculate the probability of observing a sample proportion of .15 or less. That is, calculate P( pˆ .15).
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