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Because many passengers who make reservations do not show? up, airlines often overbook flights? (sell more tickets than there are? seats). A certain airplane holds 234 passengers. If the airline believes the rate of passenger? no-shows is 7?% and sells 251 ?tickets, is it likely they will not have enough seats and someone will get?bumped?
a) Use the normal model to approximate the binomial to determine the probability of at least 235 passengers showing up.
b) Should the airline change the number of tickets they sell for this? flight? Explain.
What is the probability that Company B would charge more than Company A to drill a well - The depths of wells drilled in this area have a normal distribution with a mean of 250 feet and a standard deviation of 40 feet.
Your costs had been forecast as having an average of $138,000 with a standard deviation of $35,000. You have just learned that your suppliers are raising prices
The committee randomly surveyed 81 people who recently served as jurors. The sample mean wait time was eight hours with a sample standard deviation of four hour
From nearby water sources they have reason to believe the standard deviation is 2.3. What is the z-score they will need for their confidence interval?
Health. The probabilities that an adult American man has high blood pressure and/or high cholesterol are shown in the table.
Suppose that the monthly pay is normally distributed with a standard deviation of $400. What is the probability that the monthly pay of a bank teller.
a. State hypotheses, identify the claim b. Sketch the distribution and mark rejection regions, test value and p-value
Assume you've collected information from customers at a local bookstore. More specifically, for 10 customers, you have the following information
Superior Medical System's 2005 balance sheet showed total common equity of $2,050,000. The company had 100,000 shares of stock outstanding which sold at a price of $57.25 per share.
Refer to Example, in which for a sample of 1003 American adults, .56 was the proportion who think that it is somewhat or very likely that intelligent.
Your company sells exercise clothing and equipment on the internet. To design the clothing, you collect data on the physical characteristics of your different types of customers.
who are angel investors? Who are angel investors? what are the shat are the similarities and differences between venture capital financing and angel financing?
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